RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS, Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2020		Mar. 31, 2019		Dec. 31, 2019
Cash flows from operating activities [Abstract]
Net income	$ (1,738)	[1]	$ 1,520	[2]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	335		494	[2]
Right-of-use asset amortization	898		865	[2]
(Gain) loss on disposal of assets	6		(4)	[2]
Stock-based compensation	228		186	[2]
Deferred income taxes	(264)		184	[2]
Exchange (gain) loss	(3)		136	[2]
Changes in operating assets and liabilities [Abstract]
Accounts receivable-trade	88		(56)	[2]
Inventory	(5,302)		3,172	[2]
Prepaid expenses	27		33	[2]
Other current assets	46		(194)	[2]
Accounts payable-trade	3,107		(1,281)	[2]
Accrued expenses and other liabilities	(385)		(1,156)	[2]
Income taxes	(293)		109	[2]
Other assets	(952)		(41)	[2]
Operating lease liabilities	(890)		(834)	[2]
Total adjustments	(2,285)		1,613	[2]
Net cash provided by (used in) operating activities	(4,023)		3,133	[2]
Cash flows from investing activities [Abstract]
Purchase of property and equipment	(184)		(31)	[2]
Purchase of short-term investments	(1,697)		(5,000)	[2]
Proceeds from sales of assets	1		13	[2]
Net cash used in investing activities	(180)		(5,018)	[2]
Cash flows from financing activities [Abstract]
Payments on long-term debt	0		(8,968)	[2]
Repurchase of treasury stock	0		(715)	[2]
Net cash used in financing activities	0		(9,683)	[2]
Effect of exchange rate changes on cash and cash equivalents	(279)		177	[2]
Net decrease in cash and cash equivalents	(4,482)		(11,391)	[2]
Cash and cash equivalents, beginning of period	15,905		24,070	[2]	$ 24,070	[2]
Cash and cash equivalents, end of period	$ 11,423		12,679	[2]	15,905
As Reported [Member]
Cash flows from operating activities [Abstract]
Net income			869
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization			495
Right-of-use asset amortization			0
(Gain) loss on disposal of assets			(4)
Stock-based compensation			186
Deferred income taxes			(34)
Exchange (gain) loss			2
Changes in operating assets and liabilities [Abstract]
Accounts receivable-trade			(48)
Inventory			3,303
Prepaid expenses			(293)
Other current assets			(13)
Accounts payable-trade			(318)
Accrued expenses and other liabilities			(1,205)
Income taxes			96
Other assets			7
Operating lease liabilities			0
Total adjustments			2,174
Net cash provided by (used in) operating activities			3,043
Cash flows from investing activities [Abstract]
Purchase of property and equipment			(31)
Purchase of short-term investments			(5,000)
Proceeds from sales of assets			13
Net cash used in investing activities			(5,018)
Cash flows from financing activities [Abstract]
Payments on long-term debt			(8,968)
Repurchase of treasury stock			(715)
Net cash used in financing activities			(9,683)
Effect of exchange rate changes on cash and cash equivalents			267
Net decrease in cash and cash equivalents			(11,391)
Cash and cash equivalents, beginning of period			24,070		24,070
Cash and cash equivalents, end of period			12,679
Adjustments [Member]
Cash flows from operating activities [Abstract]
Net income			651
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization			(1)
Right-of-use asset amortization			865
(Gain) loss on disposal of assets			0
Stock-based compensation			0
Deferred income taxes			218
Exchange (gain) loss			134
Changes in operating assets and liabilities [Abstract]
Accounts receivable-trade			(8)
Inventory			(131)
Prepaid expenses			326
Other current assets			(181)
Accounts payable-trade			(963)
Accrued expenses and other liabilities			49
Income taxes			13
Other assets			(48)
Operating lease liabilities			(834)
Total adjustments			(561)
Net cash provided by (used in) operating activities			90
Cash flows from investing activities [Abstract]
Purchase of property and equipment			0
Purchase of short-term investments			0
Proceeds from sales of assets			0
Net cash used in investing activities			0
Cash flows from financing activities [Abstract]
Payments on long-term debt			0
Repurchase of treasury stock			0
Net cash used in financing activities			0
Effect of exchange rate changes on cash and cash equivalents			(90)
Net decrease in cash and cash equivalents			0
Cash and cash equivalents, beginning of period			0		$ 0
Cash and cash equivalents, end of period			$ 0

[1] For the three months ended March 31, 2020, there were 492 shares 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.

[2] As described in Note 2 to these Consolidated Financial Statements, we have restated the consolidated financial statements for the three months ended March 31, 2019