Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
1 Months Ended | 6 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
Aug. 20, 2020 |
Jul. 31, 2020 |
Jun. 19, 2020 |
Apr. 24, 2020 |
Oct. 31, 2018 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Apr. 30, 2020 |
Apr. 30, 2019 |
|
| Equity (Textual) | |||||||||
| Sale of common stock, shares | 300,000 | ||||||||
| Net proceeds on sale of common stock | $ 2,500 | ||||||||
| Warrant to purchase of common stock | 1,907 | ||||||||
| Share cancelled due to termination of employees | 400 | ||||||||
| Compensation expense related to stock options | $ 500 | $ 300 | |||||||
| Unrecognized compensation expense | $ 1,500 | ||||||||
| Description of pre-funded warrants | Holders of 1.2 million pre-funded April 2020 warrants exercised their warrants at $0.003 per share and received 1.2 million shares of common stock. | ||||||||
| Weighted average remaining contractual term | 2 years 9 months 18 days | ||||||||
| Subsequent event, description | The Company issued and sold 4.3 million shares of common stock and 2.8 million pre-funded warrants to purchase shares of common stock. The price to the public in this offering for each share of common stock was $4.50 and for each pre-funded warrant was $4.497. Each pre-funded warrant has an exercise price of $0.003 per share and is exercisable immediately upon issuance. The pre-funded warrants are subject to certain limitations on beneficial ownership. Gross proceeds from this offering to Actinium were $31.6 million, before deducting underwriting discounts and commissions and other offering expenses payable by the Company. Net proceeds from this offering were $29.1 million. | The Company issued 5 thousand shares of restricted common stock, valued at $30 thousand, for consulting services. | |||||||
| Dividend to common stockholders | $ 1 | 1 | |||||||
| Employees [Member] | |||||||||
| Equity (Textual) | |||||||||
| Issuance of common stock, shares | 357,189 | ||||||||
| Non Employees [Member] | |||||||||
| Equity (Textual) | |||||||||
| Issuance of common stock, shares | 33,332 | ||||||||
| Subsequent Event [Member] | |||||||||
| Equity (Textual) | |||||||||
| Description of pre-funded warrants | Holders of 0.4 million pre-funded April 2020 and June 2020 warrants exercised their warrants at $0.003 per share and received 0.4 million shares of common stock. Holders of 2 thousand April 2019 warrants exercised their warrants at $15.00 per share and received 2 thousand shares. | ||||||||
| Subsequent event, description | The Company filed a registration statement including a base prospectus which covers the offering, issuance and sale of up to $500 million of common stock, preferred stock, warrants, units and/or subscription rights; and a sales agreement prospectus covering the offering, issuance and sale of up to a maximum aggregate offering price of $200 million of common stock that may be issued and sold under the Capital on Demand™ Sales Agreement with JonesTrading Institutional Services LLC. | ||||||||
| Series A Warrants [Member] | |||||||||
| Equity (Textual) | |||||||||
| Received amount | $ 1,500 | ||||||||
| Warrants exercised | 83,000 | ||||||||
| Warrants [Member] | Minimum [Member] | |||||||||
| Equity (Textual) | |||||||||
| Exercise price of warrant | $ 15.60 | $ 15.60 | $ 26.40 | ||||||
| Warrants [Member] | Maximum [Member] | |||||||||
| Equity (Textual) | |||||||||
| Exercise price of warrant | $ 26.40 | $ 26.40 | $ 37.50 | ||||||
| Lincoln Park Capital Fund, LLC [Member] | |||||||||
| Equity (Textual) | |||||||||
| Received amount | $ 200 | ||||||||
| Sale of common stock, shares | 27,000 | ||||||||
| Lincoln Park Capital Fund, LLC [Member] | Purchase Agreement [Member] | |||||||||
| Equity (Textual) | |||||||||
| Aggregate value of common stock, shares over life of agreement | $ 32,500 | ||||||||
| Common Stock [Member] | |||||||||
| Equity (Textual) | |||||||||
| Share price | $ 9.75 | ||||||||
| Warrant [Member] | |||||||||
| Equity (Textual) | |||||||||
| Issuance of common stock, shares | 1,900,000 | ||||||||
| Share price | $ 9.747 | ||||||||
| Warrant to purchase of common stock | 700,000 | ||||||||
| Warrants exercised | 0.003 | ||||||||
| Net proceeds of public offering | $ 23,000 | ||||||||
| Gross proceeds | $ 25,000 | ||||||||