CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net (loss) earnings	$ (1,303)	$ 746
Adjustments to reconcile net (loss) earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	4,776	5,227
Stock-based compensation	777	785
Amortization of deferred financing costs	120	277
Deferred income taxes	(505)	(535)
Net unrealized losses on foreign currency revaluation	1,002	532
Other, net	520	56
Changes in operating assets and liabilities:
Accounts receivable	2,528	1,985
Unbilled receivables	893	0
Inventories	(4,734)	(2,384)
Account payable	(777)	(932)
Accrued expenses	(3,616)	(4,651)
Other operating assets/liabilities, net	645	(1,822)
Net cash provided by (used in) operating activities	326	(716)
Cash flows from investing activities:
Purchases of property, plant and equipment	(2,216)	(1,009)
Proceeds from disposal/sale of property, plant and equipment	48	9
Net cash used in investing activities	(2,168)	(1,000)
Cash flows from financing activities:
Dividends paid to common stockholders	(791)	(781)
Borrowings under revolving credit line	0	6,000
Repayments of revolving credit line	0	(2,000)
Reduction in notes payable	0	(203)
Repayments of long-term debt	(781)	(2,544)
Net cash (used in) provided by financing activities	(1,572)	472
Effect of exchange rate changes on cash and cash equivalents	912	114
Net decrease in cash and cash equivalents	(2,502)	(1,130)
Cash and cash equivalents - beginning of period	69,354	73,411
Cash and cash equivalents - end of period	66,852	72,281
Cash paid during the period for:
Income taxes, net of refunds received	1,040	478
Interest payment	$ 1,079	$ 1,143