Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 2,775	$ (342)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,432	1,105
Stock-based compensation	667	425
Loss on sale of discontinued operations		164
Change in allowance for doubtful accounts	245	20
Equity in loss of partnerships	222	24
Changes in operating assets and liabilities:
Accounts receivable	(1,255)	(1,043)
Inventories	(1,918)	(1,196)
Contract assets	(3,053)	(682)
Other assets	(377)	(458)
Accounts payable	1,480	2,113
Accrued expenses	(389)	432
Other liabilities	428	(37)
Net cash provided by operating activities	257	525
Cash flows from investing activities:
Purchases of property, plant and equipment	(1,608)	(618)
Investment in partnerships	(539)	(100)
Net cash used in investing activities	(2,147)	(718)
Cash flows from financing activities:
Proceeds from long-term debt	10,833	7,481
Repayments of long-term debt	(9,055)	(7,843)
Proceeds from employee stock purchases and exercise of stock options	378	129
Change in restricted cash	(11)	(56)
Net cash provided by (used in) financing activities	2,145	(289)
Effect of exchange rate changes on cash	(89)	178
Net increase (decrease) in cash	166	(304)
Cash, beginning of period	373	667
Cash, end of period	539	$ 363
Noncash investing and financing:
Investment in partnerships through liability incurred	187
Acquisition of property, plant and equipment in accounts payable	$ 1,265