Restatement of Previously Issued Financial Statements - Impact on Balance Sheet (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Current assets:
Cash and cash equivalents	$ 5,246	$ 19,143	$ 6,145	$ 13,027	$ 3,743
Accounts receivable, net	3,377	1,533	3,711	2,087	1,665
Inventory, net	1,332	966	1,797	2,340	2,693
Prepaid expenses and other current assets	1,403	2,283	3,834	1,016	1,576
Total current assets	11,358	23,925	15,487	18,470	14,352
Property and equipment, net	177	12,447	203	11,524	12,047
Right of use asset	695	949	761	825	888
Other non-current assets	2,012	2,012	2,012	2,012	2,012
Total assets	14,242	39,333	18,463	32,831	29,299
Current liabilities:
Long-term debt, current portion	1,426	16,833	1,318	12,630	12,252
Accounts payable	7,734	8,707	4,906	12,036	9,537
Accrued expenses	3,908	3,563	5,152	3,877	3,828
Lease liability, current portion	319	175	277	239	231
Total current liabilities	13,387	29,278	11,653	28,782	25,848
Lease liabilities, long-term	466	784	550	630	708
Warrant liability	5,934	5,356	9,285	1,050	8,101
Total liabilities	19,787	35,418	21,488	30,462	34,657
Commitments and contingencies (Note 13)
Stockholders' equity
Preferred stock, $.0001 par value, 10,000,000 shares authorized, 4,850 issued and no shares outstanding at December 31, 2022 and no shares issued and outstanding at December 31, 2021
Common stock, $.0001 par value, 300,000,000 shares authorized, 42,970,134 and 3,034,901 issued and outstanding at December 31, 2022 and December 31, 2021, respectively	4		4	1
Additional paid-in capital	403,153	387,205	401,744	401,211	388,317
Accumulated deficit	(408,702)	(383,290)	(404,773)	(398,843)	(393,675)
Total stockholders' equity	(5,545)	3,915	(3,025)	2,369	(5,358)	$ 49,328	$ 45,745
Total liabilities and stockholders' equity	$ 14,242	$ 39,333	18,463	32,831	29,299
Reverse stock split conversion ratio	0.025	0.025
Error Correction, Accounting for Warrants | As Previously Reported
Current assets:
Cash and cash equivalents		$ 19,143	6,145	13,027	3,743
Accounts receivable, net		1,533	3,711	2,087	1,665
Inventory, net		966	1,797	2,340	2,693
Prepaid expenses and other current assets		2,283	3,834	1,016	1,576
Total current assets		23,925	15,487	18,470	14,352
Property and equipment, net		12,447	203	11,524	12,047
Right of use asset		949	761	825	888
Other non-current assets		2,012	2,012	2,012	2,012
Total assets		39,333	18,463	32,831	29,299
Current liabilities:
Long-term debt, current portion		16,833	1,318	12,630	12,252
Accounts payable		8,707	4,906	12,036	9,537
Accrued expenses		3,563	5,152	3,877	3,828
Lease liability, current portion		175	277	239	231
Total current liabilities		29,278	11,653	28,782	25,848
Lease liabilities, long-term		784	550	630	708
Total liabilities		30,062	12,203	29,412	26,556
Stockholders' equity
Preferred stock, $.0001 par value, 10,000,000 shares authorized, 4,850 issued and no shares outstanding at December 31, 2022 and no shares issued and outstanding at December 31, 2021					887
Common stock, $.0001 par value, 300,000,000 shares authorized, 42,970,134 and 3,034,901 issued and outstanding at December 31, 2022 and December 31, 2021, respectively			4	1
Additional paid-in capital		396,388	437,027	414,523	400,742
Accumulated deficit		(387,117)	(430,771)	(411,105)	(398,886)
Total stockholders' equity		9,271	6,260	3,419	2,743	$ 49,328
Total liabilities and stockholders' equity		39,333	18,463	32,831	29,299
Error Correction, Accounting for Warrants | Error Correction, Adjustment
Current liabilities:
Warrant liability		5,356	9,285	1,050	8,101
Total liabilities		5,356	9,285	1,050	8,101
Stockholders' equity
Preferred stock, $.0001 par value, 10,000,000 shares authorized, 4,850 issued and no shares outstanding at December 31, 2022 and no shares issued and outstanding at December 31, 2021					(887)
Additional paid-in capital		(9,183)	(35,283)	(13,312)	(12,425)
Accumulated deficit		3,827	25,998	12,262	5,211
Total stockholders' equity		$ (5,356)	$ (9,285)	$ (1,050)	$ (8,101)