Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 5,524	$ 7,092
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,168	10,328
Unrealized foreign currency gain	(1,497)	(414)
Net (gain) loss on interest rate swaps	(129)	404
Fair value adjustments to earnout liabilities	(1,755)	1,033
Earnout payments	(7,797)
Loss on sale of property and equipment	83	189
Debt discount amortization	504	539
Share-based compensation expense	677	1,149
Bad debt expense	960	294
Inventory reserve expense	316	838
Deferred income taxes	(46)	(644)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	17,342	14,612
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,646)	1,248
Inventories	(407)	4,443
Prepaid expense and other current assets	1,808	(3,755)
Deferred charges and other assets	792	1,119
Accounts payable and accrued expenses	(8,018)	(3,613)
Billings in excess of costs and estimated earnings on uncompleted contracts	(11,828)	11,160
Income taxes payable	(1,367)	(1,081)
Other liabilities	(9)	(871)
Net cash provided by operating activities	1,675	44,070
Cash flows from investing activities:
Acquisitions of property and equipment	(641)	(552)
Proceeds from sale of property and equipment	44	291
Net cash used in investing activities	(597)	(261)
Cash flows from financing activities:
Decrease in short-term and long-term restricted cash	424	319
Net repayments on revolving credit lines	(1,107)	(9,202)
Repayments of debt	(7,656)	(16,207)
Deferred financing fees paid	(171)
Earnout payments	(7,396)	(2,341)
Proceeds from sale-leaseback transactions		11,000
Payments on capital lease and sale-leaseback financing liability	(375)	(33)
Proceeds from employee stock purchase plan, exercise of stock options, and dividend reinvestment plan	1,246	471
Repurchases of common stock		(188)
Dividends paid to common shareholders	(5,173)	(4,486)
Net cash used in financing activities	(20,208)	(20,667)
Effect of exchange rate changes on cash and cash equivalents	472	(730)
Net (decrease) increase in cash and cash equivalents	(18,658)	22,412
Cash and cash equivalents at beginning of period	45,824	34,194
Cash and cash equivalents at end of period	27,166	56,606
Cash paid during the period for
Interest	2,842	3,523
Income taxes	$ 2,704	1,747
Non-cash transactions
Property, plant and equipment acquired under capital leases		3,296
Earnout settled through an exchange of accounts receivable		$ 3,190