Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (17,325,000)	$ (12,589,000)	$ (7,266,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	1,103,000	1,009,000	925,000
Amortization of intangibles	1,902,000	1,841,000	1,923,000
Stock issued and stock to be issued for compensation, royalties and services	229,000	425,000	734,000
Non-cash gain and unrealized gain on derivative liability	(129,000)	(111,000)	(113,000)
Non-cash royalties, net (see Note 2 - Investment and note receivable)	(7,000)	(3,000)	19,000
Provision (credit) for bad debt expense	33,000	(13,000)	93,000
Deferred income taxes	(352,000)	(1,767,000)	(107,000)
Non-cash unrealized foreign currency loss (gain)	246,000	(362,000)	172,000
Impairment of goodwill and other intangible assets	4,347,000	3,155,000
Inventory reserves	1,592,000	138,000	312,000
Impairment of deposits and other assets	1,509,000
Loss on disposal of assets	13,000	47,000	57,000
(Increase) decrease in operating assets:
Trade accounts receivable	(3,841,000)	(1,150,000)	4,432,000
Inventories	(2,235,000)	(411,000)	(1,672,000)
Contract assets	(61,000)	591,000	(1,454,000)
Prepaid expenses and other current assets	(392,000)	(421,000)	105,000
Deposits and other assets	(59,000)	(506,000)	(25,000)
Increase (decrease) in operating liabilities:
Accounts payable	1,436,000	(1,163,000)	495,000
Accrued expenses	1,116,000	(464,000)	(518,000)
Refund liabilities	852,000	130,000	(30,000)
Contingent consideration		3,000	(54,000)
Contract liabilities	(2,260,000)	2,252,000	1,371,000
NET CASH USED IN OPERATING ACTIVITIES	(12,283,000)	(9,369,000)	(601,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds on sale of building, net	7,720,000
Payment for restricted investment	(400,000)
Purchases of property and equipment	(1,042,000)	(893,000)	(824,000)
Proceeds from sale of property and equipment		8,000	27,000
Investment in other intangible assets	(492,000)	(638,000)	(850,000)
Investment in convertible notes receivable	(655,000)
Proceeds from notes receivable	19,000	39,000
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	5,150,000	(1,484,000)	(1,647,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from overdraft facility	19,532,000	9,782,000
Payments on overdraft facility	(18,122,000)	(9,782,000)
Proceeds from line of credit	19,955,000	22,332,000
Payments on line of credit	(18,976,000)	(22,332,000)
Payments on capital lease obligations	(3,000)	(29,000)	(41,000)
Payments on mortgage note payable	(3,350,000)	(89,000)	(85,000)
Payment to closeout derivative liability	(227,000)
Payments on contingent consideration	(45,000)	(61,000)	(59,000)
Proceeds from sales of common stock, net of offering costs		18,905,000
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES	(1,236,000)	18,726,000	(185,000)
Effect of exchange rate changes on cash	225,000	156,000	(217,000)
Net (decrease) increase in cash, cash equivalents and restricted cash	(8,144,000)	8,029,000	(2,650,000)
Cash, cash equivalents and restricted cash at beginning of year	12,646,000	4,617,000	7,267,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF YEAR	4,502,000	12,646,000	4,617,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid	237,000	158,000	211,000
Interest paid, net of capitalized interest	520,000	500,000	469,000
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Common stock issued and issuable for royalties payable pursuant to product agreements, related party	14,000	16,000	38,000
Common stock issued and to be issued for consulting services and compensation in common stock	358,000	439,000	270,000
Exchange of investment in TPI in return for note receivable (Note 2)			385,000
Accrued property and equipment purchases at December 31	8,000	27,000	45,000
Accrued investment in other intangible assets at December 31	55,000	15,000	48,000
Assets acquired via capital leases			$ 19,000