Equity (Details Textual) - USD ($)
|
|
|
|
|
|
|
1 Months Ended |
3 Months Ended |
9 Months Ended |
12 Months Ended |
Jun. 09, 2015 |
Jun. 03, 2015 |
May. 07, 2015 |
May. 04, 2015 |
Mar. 09, 2015 |
Feb. 11, 2015 |
Sep. 01, 2015 |
Aug. 24, 2015 |
Aug. 17, 2015 |
Feb. 18, 2015 |
Feb. 18, 2015 |
Apr. 17, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Dec. 31, 2014 |
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net proceeds from sale of stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 2,350,332
|
|
|
Underwritten offering common stock, Shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,044,672
|
|
|
Warrants issued to purchase common stock, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
153,459
|
|
|
Proceeds from Stock Options Exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 119,780
|
|
|
Number of shares, exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,223,641
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 6,307,799
|
$ 5,221,673
|
|
Fair value assumptions, expected term |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 years 6 months
|
|
3 years
|
Fair value assumptions, expected volatility rate |
[1] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
90.00%
|
|
71.00%
|
Fair value assumptions, expected dividend rate |
[2] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Expense related to common stock granted |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 800,000
|
$ 700,000
|
$ 2,700,000
|
1,600,000
|
|
Warrants to purchase common stock expected to vest, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
150,000
|
|
|
Issuance and sale of common stock and warrants |
|
|
|
|
|
|
|
|
|
|
|
|
$ 200,000,000
|
|
|
|
|
|
Proceeds from common stock issued |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 2,423,209
|
|
|
Underwriting agreement, description |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
In addition, the Company granted the underwriters a 30-day option to purchase up to an additional 666,666 shares of common stock and warrants to purchase 499,999 shares of common stock solely to cover over-allotments, if any. The underwriter did not exercise the over-allotment option.
|
|
|
Restricted shares issued |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
547,269
|
|
|
Investor [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net proceeds from sale of stock |
|
$ 4,480,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Shares purchased by investors |
|
1,923,078
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Price per share |
|
$ 2.60
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Proceeds from common stock issued |
|
$ 5,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sales Agreement [Member] | MLV & Co. LLC [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Issuance and sale of common stock and warrants |
|
|
|
|
|
|
|
|
|
|
|
|
$ 75,000,000
|
|
|
|
|
|
Public Offering [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net proceeds from sale of stock |
|
|
|
|
|
|
$ 18,500,000
|
|
|
|
|
|
|
|
|
|
|
|
Price per share |
|
|
|
|
|
|
$ 4.50
|
|
|
|
|
|
|
|
|
|
|
|
Underwritten offering common stock, Shares |
|
|
|
|
|
|
4,444,444
|
|
|
|
|
|
|
|
|
|
|
|
Warrants issued to purchase common stock, shares |
|
|
|
|
|
|
3,333,333
|
|
|
|
|
|
|
|
|
499,999
|
|
|
Exercise price of warrants |
|
|
|
|
|
|
$ 6.50
|
|
|
|
|
|
|
|
|
|
|
|
Term of warrants |
|
|
|
|
|
|
4 years
|
|
|
|
|
|
|
|
|
|
|
|
Fair value of warrants |
|
|
|
|
|
|
$ 3,540,659
|
|
|
|
|
|
|
|
|
|
|
|
Warrants/ Common stock granted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
666,666
|
|
|
Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Price per share |
|
|
|
|
|
|
$ 4.50
|
|
|
|
|
|
|
|
|
|
|
|
Underwritten offering common stock, Shares |
|
|
|
|
|
|
4,444,444
|
|
|
|
|
|
|
|
|
|
|
|
Warrants issued to purchase common stock, shares |
|
|
|
|
|
|
3,333,333
|
|
|
|
|
|
|
|
|
|
|
|
Exercise price of warrants |
|
|
|
|
|
|
$ 6.50
|
|
|
|
|
|
|
|
|
|
|
|
Term of warrants |
|
|
|
|
|
|
4 years
|
|
|
|
|
|
|
|
|
|
|
|
Warrants exercised by warrant holders |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,524,893
|
|
|
Number of shares, exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,357,100
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
57,772
|
0
|
$ 171,432
|
98,224
|
|
Fair value of warrants |
|
|
|
|
|
|
$ 3,540,659
|
|
|
|
|
|
|
|
|
|
|
|
Stock Options [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of shares, exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(20,000)
|
|
|
Number of stock option granted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,364,499
|
|
|
Share-based Compensation, Term |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
8 years 4 months 6 days
|
|
|
Stock option exercise price |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.78
|
|
|
Fair value assumptions, expected discount rate |
|
|
1.91%
|
1.70%
|
1.71%
|
1.83%
|
|
1.65%
|
1.58%
|
1.75%
|
1.69%
|
|
|
|
|
|
|
|
Fair value assumptions, expected term |
|
|
6 years
|
6 years
|
6 years
|
6 years
|
|
6 years
|
6 years
|
6 years
|
6 years
|
|
|
|
|
|
|
|
Fair value assumptions, expected volatility rate |
|
|
85.01%
|
85.01%
|
85.01%
|
86.29%
|
|
92.60%
|
92.60%
|
92.60%
|
86.29%
|
|
|
|
|
|
|
|
Fair value assumptions, expected dividend rate |
|
|
0.00%
|
0.00%
|
0.00%
|
0.00%
|
|
0.00%
|
0.00%
|
0.00%
|
0.00%
|
|
|
|
|
|
|
|
Fair value of warrants determined utilizing the Black-Scholes option pricing model |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock Options [Member] | Option One [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 208,078
|
|
|
Stock Options [Member] | Option Two [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,481
|
|
|
Stock Options [Member] | Option Three [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
38,644
|
|
|
Stock Options [Member] | Option Four [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14,125
|
|
|
Stock Options [Member] | Option Five [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13,337
|
|
|
Stock Options [Member] | Option Six [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3,656
|
|
|
Stock Options [Member] | Option Seven [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,585
|
|
|
Stock Options [Member] | Employees and Board Members [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of stock option granted |
|
|
|
|
|
|
|
|
|
|
531,000
|
|
|
|
|
|
|
|
Share-based Compensation vesting period |
|
|
|
|
|
|
|
|
|
|
4 years
|
|
|
|
|
|
|
|
Share-based Compensation, Term |
|
|
|
|
|
|
|
|
|
|
10 years
|
|
|
|
|
|
|
|
Stock option exercise price |
|
|
|
|
|
|
|
|
|
|
$ 3.58
|
|
|
|
|
|
|
|
Fair value of warrants determined utilizing the Black-Scholes option pricing model |
|
|
|
|
|
|
|
|
|
|
|
$ 1,400,000
|
|
|
|
|
|
|
Stock Options [Member] | Employees [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of stock option granted |
|
|
76,000
|
152,499
|
200,000
|
5,000
|
|
50,000
|
100,000
|
250,000
|
|
|
|
|
|
|
|
|
Share-based Compensation vesting period |
|
|
4 years
|
4 years
|
4 years
|
4 years
|
|
4 years
|
4 years
|
4 years
|
|
|
|
|
|
|
|
|
Share-based Compensation, Term |
|
|
10 years
|
10 years
|
10 years
|
10 years
|
|
10 years
|
10 years
|
10 years
|
|
|
|
|
|
|
|
|
Stock option exercise price |
|
|
$ 2.99
|
$ 2.52
|
$ 2.64
|
$ 2.91
|
|
$ 2.11
|
$ 1.91
|
$ 2.34
|
|
|
|
|
|
|
|
|
Fair value of warrants determined utilizing the Black-Scholes option pricing model |
|
|
$ 163,359
|
$ 275,572
|
$ 378,664
|
$ 11,000
|
|
$ 79,790
|
$ 144,249
|
$ 442,538
|
|
|
|
|
|
|
|
|
Restricted Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stock-based compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 300,000
|
$ 150,000
|
$ 3,500,000
|
$ 400,000
|
|
Share-based Compensation vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6 months
|
|
|
Number of additional stock option granted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2,277,582
|
|
|
Warrants to purchase common stock expected to vest, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
329,650
|
|
|
Restricted shares issued |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
479,650
|
|
|
Restricted Stock [Member] | Employees [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Equity (Textual) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Number of shares, exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
152,499
|
|
|
Expense related to common stock granted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 852,681
|
|
|
Restricted stock cancelled |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
126,265
|
|
|
|
|