Commitments and Contingencies (Details Textual) - USD ($)  | 
1 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Dec. 19, 2018  | 
Jun. 15, 2012  | 
Jun. 30, 2019  | 
Jun. 30, 2018  | 
Feb. 16, 2016  | 
|
| Medpace Inc [Member] | |||||
| Commitments and Contingencies (Textual) | |||||
| Total project estimated to cost | $ 10,200,000 | ||||
| Research and development costs | $ 1,500,000 | $ 1,500,000 | |||
| Project remaining cost | $ 2,800,000 | ||||
| Oak Ridge National Laboratory [Member] | |||||
| Commitments and Contingencies (Textual) | |||||
| Purchase of materials | $ 200,000 | 100,000 | 100,000 | ||
| Goodwin [Member] | |||||
| Commitments and Contingencies (Textual) | |||||
| Research and development costs | 1,400,000 | $ 800,000 | |||
| Project remaining cost | $ 600,000 | ||||
| License and Sponsored Research Agreement [Member] | Fred Hutchinson Cancer Research Center [Member] | |||||
| Commitments and Contingencies (Textual) | |||||
| Description of royalty payment | Royalty payments of 2% of net sales will be due to FHCRC. | ||||
| Milestone payment | $ 1,000,000 | ||||