Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (4,254)	$ 2,775
Loss from discontinued operations, net of tax	1,713	571
Income (loss) from continuing operations	(2,541)	3,346
Adjustments to reconcile net income (loss) from continuing operations to net cash provided by operating activities:
Depreciation and amortization	1,628	1,410
Impariment loss	3,765
Equity in loss of partnerships	138	222
Stock-based compensation	866	667
Change in allowance for doubtful accounts	(499)	245
Changes in operating assets and liabilities:
Accounts receivable	1,884	(1,285)
Inventories	(262)	(1,889)
Contract assets	(1,492)	(3,053)
Other assets	798	(251)
Accounts payable	(1,166)	1,588
Accrued expenses	(895)	(402)
Other liabilities	(49)	428
Net cash provided by operating activities of continuing operations	2,175	1,026
Net cash (used in) operating activities of discontinued operations	(96)	(769)
Net cash provided by operating activities	2,079	257
Cash flows from investing activities:
Purchases of machinery and equipment	(2,359)	(1,608)
Payments for acquistion of other assets	(667)
Purchase of investment securities	(36,688)
Proceeds from sale of investment securities	38,015
Proceeds from maturities of investment securities	1,750
Investment in partnerships	(247)	(539)
Net cash (used in) investing activities of continuing operations	(196)	(2,147)
Net cash (used in) investing activities of discontinued operations	(16)
Net cash (used in) investing activities	(212)	(2,147)
Cash flows from financing activities:
Proceeds from long-term debt		10,833
Repayments of long-term debt		(9,055)
Payment of financing leases	(54)
Exercise of stock options and employee stock purchase plan shares	189	378
Withholding of common stock upon vesting of restricted stock units	(235)
Net cash provided by (used in) financing activities	(100)	2,156
Effect of exchange rate changes on cash of continuing operations	(8)	(96)
Effect of exchange rate changes on cash of discontinued operations	(5)	(2)
Effect of exchange rate changes on cash	(13)	(98)
Net increase in cash	1,754	168
Cash, cash equivalents and restricted cash, beginning of period	8,047	1,017
Cash, cash equivalents and restricted cash, end of period	9,801	1,185
Non-cash investing and financing:
Acquisition of machinery and equipment in accounts payable	297	1,265
Investment in partnerships through liability incurred		$ 187
Fitting software other asset through liabilities incurred and exchange of investment in partnership	$ 3,012