Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net (loss) income	$ (2,523)	$ 11,217
Adjustment to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	11,217	8,103
Unrealized foreign currency loss	1,689
Loss (gain) on sale of property and equipment	222	(13)
Non-cash interest expense included in net income	791	411
Share-based compensation expense	1,318	1,221
Bad debt expense	504	111
Inventory reserve expense	463	461
Deferred income taxes	(657)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(16,635)	(2,772)
Costs and estimated earnings in excess of billings on uncompleted contracts	(10,522)	(2,889)
Inventories	170	(253)
Prepaid expense and other current assets	286	(4,164)
Deferred charges and other assets	201	478
Accrued litigation settlement		(2,536)
Accounts payable and accrued expenses	2,354	(1,554)
Billings in excess of costs and estimated earnings on uncompleted contracts	(252)	(674)
Income taxes payable	274	(414)
Other liabilities	479	(436)
Net cash (used in) provided by operating activities	(10,621)	6,297
Cash flows from investing activities:
Acquisitions of property and equipment	(526)	(801)
Proceeds from sale of property and equipment	2,396	7,475
Net cash paid for acquisitions	(37,130)	(8,214)
Net used in investing activities	(35,260)	(1,540)
Cash flows from financing activities:
Decrease in restricted cash	100
Net (repayments) borrowings on revolving credit lines	(1,242)	1,557
Borrowings of long-term debt	170,000
Repayments of debt	(101,966)	(6,637)
Financing fees paid	(2,923)
Proceeds from employee stock purchase plan and exercise of stock options	298	1,048
Repurchases of common stock		(973)
Dividends paid to common shareholders	(5,734)	(4,374)
Net cash provided by (used in) financing activities	58,533	(9,379)
Effect of exchange rate changes on cash and cash equivalents	(51)
Net increase (decrease) in cash and cash equivalents	12,601	(4,622)
Cash and cash equivalents at beginning of period	18,162	22,661
Cash and cash equivalents at end of period	30,763	18,039
Supplemental Schedule of Non-Cash Activities:
Common stock issued in business acquisition	72,145	500
Cash paid during the period for:
Interest	2,965	2,061
Income taxes	$ 1,812	$ 7,171