Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (3,854)	$ (2,668)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	236	229
Amortization of intangibles	464	478
Stock and options issued and stock to be issued for compensation, royalties and services	91	289
Unrealized (gain) loss on derivative liability	(33)	108
Provision for (credit to) bad debt expense and returns allowances	(28)	(37)
Deferred income taxes	(294)	3
Inventory reserve	179	122
Non-cash unrealized foreign currency (gains)/losses	(176)	64
Loss on disposal of assets	5	0
(Increase) decrease in operating assets:
Trade accounts receivable	(643)	3,151
Inventories	(296)	(236)
Costs in excess of billings	475	(1,347)
Prepaid expenses and other current assets	(371)	(36)
Deposits and other assets	(3)	(16)
Increase (decrease) in operating liabilities:
Accounts payable	1,410	(711)
Accrued expenses	(210)	(765)
Unearned revenue	719	258
Billings in excess of costs	847	796
NET CASH USED IN OPERATING ACTIVITIES	(1,482)	(318)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(198)	(251)
Proceeds from sale of property and equipment	1	0
Investments in other intangible assets	(71)	(133)
Proceeds from notes receivable	19	0
NET CASH USED IN INVESTING ACTIVITIES	(249)	(384)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on capital lease obligations	(3)	(8)
Payments on mortgage note payable	(22)	(21)
Payments on contingent consideration	(61)	(59)
NET CASH USED IN FINANCING ACTIVITIES	(86)	(88)
Effect of exchange rate changes on cash	162	(123)
Net decrease in cash and cash equivalents	(1,655)	(913)
Cash and cash equivalents at beginning of period	4,617	7,267
CASH AND CASH EQUIVALENTS AT END OF PERIOD	2,962	6,354
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Income taxes paid	21	73
Interest paid, net of capitalized interest	116	125
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Common stock issued and to be issued for royalties payable pursuant to product agreements, related party	8	20
Common stock issued and to be issued for consulting services and compensation in common stock	218	159
Exchange of investment in TPI in return for note receivable (note 4)	0	385
Accrued property and equipment purchases	122	13
Accrued investment in other intangible assets	$ 29	$ 57