CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net Loss	$ (30,526)	$ (136,450)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of contingent consideration	(808)	2,716
Depreciation and amortization	1,011	3,412
Provision for doubtful accounts, net of recoveries	(127)	652
Inventory purchase commitment provision and settlement	(7,633)	9,402
Provision for excess and obsolete inventory	623	12,261
Impairment of goodwill	8,092	11,706
Impairment of right-of-use assets	0	7,434
Impairment of property and equipment	0	30,178
Impairment of intangible assets	0	32,363
Gain on sale of assets	(94)	(561)
Non-cash lease expense	279	356
Stock compensation expense	3,757	3,044
Deferred income tax benefit	(56)	(187)
Paycheck protection plan loan forgiveness	(881)	0
Changes in current assets and liabilities:
Accounts receivable	(1,406)	3,556
Inventories	1,760	3,955
Income taxes receivable	381	182
Other current assets	(613)	1,026
Other long-term assets	4	(16)
Accounts payable	1,829	(12,323)
Accrued liabilities	(1,463)	(20,662)
Income taxes payable	(17)	84
Interest payable	48	34
Net cash used in operating activities	(25,840)	(47,838)
Cash flows from investing activities:
Capital expenditures	(39)	(1,425)
Proceeds from sale of business	0	9,907
Proceeds from sale of assets	151	109
Purchase of JP3, net of cash acquired	0	(26,284)
Abandonment of patents and other intangible assets	0	(8)
Net cash provided by (used in) investing activities	112	(17,701)
Cash flows from financing activities:
Payment for contingent consideration	0	(1,200)
Proceeds from paycheck protection plan loan	0	4,788
Payments to tax authorities for shares withheld from employees	(390)	(253)
Proceeds from issuance of stock	80	462
Payments for finance leases	(62)	(70)
Net cash (used in) provided by financing activities	(372)	3,727
Effect of changes in exchange rates on cash and cash equivalents	100	(102)
Net change in cash, cash equivalents and restricted cash	(26,000)	(61,914)
Cash and cash equivalents at the beginning of period	38,660	100,575
Restricted cash at the beginning of period	664	663
Cash and cash equivalents and restricted cash at beginning of period	39,324	101,238
Cash and cash equivalents at end of period	11,534	38,660
Restricted cash at the end of period	1,790	664
Cash, cash equivalents and restricted cash at end of period	$ 13,324	$ 39,324