Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (1,129)	$ (17,325)	$ (12,589)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	724	1,103	1,009
Amortization of intangibles	1,637	1,902	1,841
Amortization of note receivable discount	(70)
Stock issued and stock to be issued for compensation, royalties and services	215	229	425
Unrealized gain on derivative liability		(129)	(111)
Non-cash loss on equity method investment in affiliate	1,043
Non-cash fair value gain on equity method investment purchase	(629)
Non-cash royalties, net (see Note 2 - Investment and Note Receivable)	5	(7)	(3)
Provision for (credit to) bad debt expense and returns allowances	136	33	(13)
Deferred income taxes	(2,574)	(352)	(1,767)
Non-cash unrealized foreign currency (gain) loss	(422)	246	(362)
Impairment of goodwill and other intangible assets	278	4,347	3,155
Inventory reserve	79	1,592	138
Impairment of deposits and other assets		1,509
Loss on disposal of assets	31	13	47
Gain on sale of businesses	(14,100)
(Increase) decrease in operating assets:
Trade accounts receivable	1,510	(3,841)	(1,150)
Inventories	(119)	(2,235)	(411)
Contract assets	(512)	(61)	591
Prepaid expenses and other current assets	121	(392)	(421)
Right of use assets - Operating leases	1,825
Deposits and other assets	31	(59)	(506)
Increase (decrease) in operating liabilities:
Accounts payable	1,708	1,436	(1,163)
Operating lease liabilities	(1,755)
Accrued expenses	2,189	1,116	(464)
Refund liabilities	(1,339)	852	130
Contingent consideration			3
Contract liabilities	(401)	(2,260)	2,252
NET CASH USED IN OPERATING ACTIVITIES	(11,518)	(12,283)	(9,369)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sale of businesses	35,396
Proceeds from sale of building, net		7,720
Proceeds from sale of restricted investment	400
Cash paid for restricted investment		(400)
Purchases of property and equipment	(321)	(1,042)	(893)
Proceeds from sale of property and equipment	21		8
Cash paid for other intangible assets	(353)	(492)	(638)
Cash paid for convertible note receivable		(655)
Cash paid for equity-method investment	(2,068)
Proceeds from Notes receivable	313	19	39
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	33,388	5,150	(1,484)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from overdraft facility	6,842	19,532	9,782
Payments on overdraft facility	(8,208)	(18,122)	(9,782)
Proceeds from line of credit	27,483	19,955	22,332
Payments on line of credit	(28,462)	(18,976)	(22,332)
Payments on financing lease obligations	(4)	(3)	(29)
Payments on mortgage note payable		(3,350)	(89)
Payments on notes payable	(303)
Cash payments for repurchases of common stock	(413)
Payment to closeout derivative liability		(227)
Payments on contingent consideration		(45)	(61)
Proceeds from sales of common stock, net of offering costs			18,905
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(3,065)	(1,236)	18,726
Effect of exchange rate changes on cash	44	225	156
Net increase (decrease) in cash, cash equivalents and restricted cash	18,849	(8,144)	8,029
Cash, cash equivalents and restricted cash at beginning of year	4,502	12,646	4,617
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF YEAR	23,351	4,502	12,646
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid	153	237	158
Interest paid, net of capitalized interest	315	520	500
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Non-cash item for January 1, 2019 adoption of ASC 842 - establishment of right-of-use assets and offsetting lease obligations	7,703
Note payable, related party assumed by buyer of electromechanical business as partial consideration for purchase of business	5,304
Non-cash investment in equity method investment	3,839
Common stock issued and issuable for royalties payable pursuant to product agreements, related party	30	14	16
Common stock issued and to be issued for consulting services and compensation in common stock	178	358	439
Accrued property and equipment purchases at December 31	8	8	27
Accrued investment in other intangible assets at December 31	3	55	15
Payment of insurance policy with short-term note payable	$ 776