Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	[1]	$ (4,901)	$ (1,903)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization		1,021	1,655
Operating lease asset amortization		3,193	3,482
Impairment of goodwill and long-lived assets		1,078	1,002
Loss on disposal of assets		59	9
Stock-based compensation		887	770
Deferred income taxes		442	(334)
Exchange (gain) loss		(5)	137
Changes in operating assets and liabilities:
Accounts receivable-trade		86	(23)
Inventory		(12,686)	9,330
Prepaid expenses		675	596
Other current assets		1,574	(96)
Accounts payable-trade		(440)	3,500
Accrued expenses and other liabilities		1,022	(2,719)
Income taxes, net		(1,120)	(1,220)
Other assets		(41)	(327)
Operating lease liabilities		(3,371)	(3,388)
Total adjustments		(7,626)	12,374
Net cash provided by (used in) operating activities		(12,527)	10,471
Cash flows from investing activities:
Purchase of property and equipment		(1,313)	(269)
Purchase of short-term investments		0	(18,095)
Proceeds from sales of short-term investments		7,523	9,095
Proceeds from sales of assets		46	113
Net cash provided by (used in) investing activities		6,256	(9,156)
Cash flows from financing activities:
Proceeds from long-term debt		416	0
Payments on long-term debt		0	(8,968)
Repurchase of treasury stock		0	(735)
Net cash provided by (used in) financing activities		416	(9,703)
Effect of exchange rate changes on cash and cash equivalents		279	223
Net decrease in cash and cash equivalents		(5,576)	(8,165)
Cash and cash equivalents, beginning of period		15,905	24,070
Cash and cash equivalents, end of period		10,329	15,905
Supplemental disclosures of cash flow information:
Interest paid during the period		17	36
Income tax paid during the period, net of refunds		56	715
Supplemental disclosures of non-cash activity:
Change in accruals related to property and equipment		$ (105)	$ (362)

[1] For the years ended December 31, 2020 and 2019, there were 6,401 and 9,203 shares, respectively, excluded from the diluted EPS calculation because the impact of their assumed vesting would be anti-dilutive due to a net loss in that period.