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Long-Term Debt (Details Textual) $ / shares in Units, $ in Thousands			3 Months Ended
	Apr. 18, 2020 USD ($)	Dec. 17, 2019 USD ($) d $ / shares shares	Mar. 31, 2021 USD ($) $ / shares	Mar. 31, 2020 USD ($)	Dec. 31, 2020 $ / shares
Senior Convertible Notes and Warrants
Common stock, par value | $ / shares			$ 0.001		$ 0.001
Common Stock | Beneficial owner
Senior Convertible Notes and Warrants
Beneficial owner of the Company’s issued and outstanding shares of Common Stock		46.60%
Senior Convertible Notes and Warrants
Senior Convertible Notes and Warrants
Issuance and sale of secured convertible notes		$ 3,000
Original issue discount and issuance costs		346
Net proceeds after original issue discount and issuance costs		$ 2,654
Amortization of debt discount and issuance costs			$ 49	$ 49
Senior Convertible Notes and Warrants | Common Stock
Senior Convertible Notes and Warrants
Warrants to purchase of common stock, shares | shares		340,909
Common stock, par value | $ / shares		$ 0.001
Senior Convertible Notes
Senior Convertible Notes and Warrants
Interest accrual at a variable rate adjusted on a quarterly basis, percent		2.50%
Published in the Wall Street Journal (New York edition) as of the beginning of such calendar quarter		Prime Rate
Senior Convertible Notes | Greater of
Senior Convertible Notes and Warrants
Interest accrual at a variable rate adjusted on a quarterly basis, percent		5.25%
Senior Convertible Notes | Common Stock
Senior Convertible Notes and Warrants
Senior Convertible Notes, Initial conversion price per share | $ / shares		$ 2.11
Senior Convertible Notes, Threshold percentage of stock price trigger		120.00%
Senior Convertible Notes, Threshold consecutive trading days | d		90
Senior Convertible Notes | Common Stock | Greater of
Senior Convertible Notes and Warrants
Senior Convertible Notes, Threshold percentage of stock price trigger		200.00%
Warrants | Common Stock
Senior Convertible Notes and Warrants
Warrants, Initial exercise price per share | $ / shares		$ 1.76
Paycheck Protection Program Loan
Senior Convertible Notes and Warrants
Proceeds of the Loan	$ 1,499
Loan term	2 years
Interest rate of the loan	1.00%

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