Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Marketable securities	$ 6,401
Redeemable warrants	207	$ 57
Mutual Fund [Member]
Marketable securities		7,308
Level 1 [Member]
Marketable securities	6,401
Redeemable warrants
Level 1 [Member] | Mutual Fund [Member]
Marketable securities		7,308
Level 2 [Member]
Marketable securities
Redeemable warrants
Level 2 [Member] | Mutual Fund [Member]
Marketable securities
Level 3 [Member]
Marketable securities
Redeemable warrants	207	57
Level 3 [Member] | Mutual Fund [Member]
Marketable securities
US Treasury Notes [Member]
Marketable securities	1,768
US Treasury Notes [Member] | Level 1 [Member]
Marketable securities	1,768
US Treasury Notes [Member] | Level 2 [Member]
Marketable securities
US Treasury Notes [Member] | Level 3 [Member]
Marketable securities
U.S. Government Mortgage Backed Securities [Member]
Marketable securities	1,997
U.S. Government Mortgage Backed Securities [Member] | Level 1 [Member]
Marketable securities	1,997
U.S. Government Mortgage Backed Securities [Member] | Level 2 [Member]
Marketable securities
U.S. Government Mortgage Backed Securities [Member] | Level 3 [Member]
Marketable securities
Corporate Bonds [Member]
Marketable securities	2,636
Corporate Bonds [Member] | Level 1 [Member]
Marketable securities	2,636
Corporate Bonds [Member] | Level 2 [Member]
Marketable securities
Corporate Bonds [Member] | Level 3 [Member]
Marketable securities