Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 38	$ 3,055
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,138	5,195
Unrealized foreign currency gain	(313)	(908)
Net gain on interest rate swaps	(58)
Fair value adjustments to earnout liabilities	3,897	347
Earnout payments	(2,155)
Loss on sale of property and equipment	77	3
Debt discount amortization	252	270
Share-based compensation expense	9	575
Bad debt expense	217	117
Inventory reserve expense	165	236
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	6,505	12,996
Costs and estimated earnings in excess of billings on uncompleted contracts	4,920	(1,084)
Inventories	(110)	1,826
Prepaid expense and other current assets	361	(2,025)
Deferred charges and other assets	589	1,081
Accounts payable and accrued expenses	(13,428)	(11,996)
Billings in excess of costs and estimated earnings on uncompleted contracts	(944)	(47)
Income taxes payable	206	30
Other liabilities	287	(283)
Net cash provided by operating activities	4,653	9,388
Cash flows from investing activities:
Acquisitions of property and equipment	(410)	(212)
Proceeds from sale of property and equipment	11	282
Net (used in) provided by investing activities	(399)	70
Cash flows from financing activities:
Decrease (increase) in restricted cash	342	(111)
Net repayments on revolving credit lines		(3,934)
Repayments of debt	(4,038)	(3,215)
Earnout payments		(1,100)
Payments on capital leases and sale-leaseback transactions	(186)
Proceeds from employee stock purchase plan, exercise of stock options, and dividend reinvestment plan	1,199	115
Dividends paid to common shareholders	(2,580)	(2,243)
Net cash used in financing activities	(5,263)	(10,488)
Effect of exchange rate changes on cash and cash equivalents	184	226
Net decrease in cash and cash equivalents	(825)	(804)
Cash and cash equivalents at beginning of period	45,824	34,194
Cash and cash equivalents at end of period	44,999	33,390
Cash paid during the period for:
Interest	1,445	1,816
Income taxes	$ 490	$ 861