Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 5,863	$ (54,198)
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	27,692	34,410
Gain on sale of fixed assets	(423)	(6)
Equity-based compensation expense	6,201	8,104
Deferred income taxes	647	(4,511)
Non-cash restructuring charges	5,891	102
Goodwill impairment	1,389	45,390
Definite-lived intangible asset impairment	870	41,032
Loss on sale of businesses	8,729	0
Loss on foreign currency transactions	1,231	1,659
Other	(119)	(1,129)
Changes in operating assets and liabilities (net of acquisitions):
Receivables net, retainage and contract assets	(19,247)	(54,040)
Inventories	(3,188)	(4,645)
Prepaid expenses and other assets	678	6,562
Accounts payable and accrued expenses	(256)	23,726
Contract liabilities	(21,537)	(9,869)
Other operating	(396)	(79)
Net cash provided by operating activities	14,025	32,508
Cash flows from investing activities:
Capital expenditures	(22,230)	(22,515)
Proceeds from sale of fixed assets	955	423
Patent expenditures	(197)	(340)
Other acquisition activity	(9,000)	(9,045)
Sale of Bayou, net of cash disposed	37,942	0
Net cash provided by (used in) investing activities	7,470	(31,477)
Cash flows from financing activities:
Repurchase of common stock	(18,622)	(31,730)
Investments from non-controlling interests	0	158
Distributions to non-controlling interests	0	(71)
Payment of contingent consideration	0	(500)
Credit facility amendment fees	(1,093)	0
Principal payments on notes payable	(26)	150
Proceeds from line of credit, net	(19,000)	14,000
Principal payments on long-term debt	(19,688)	(15,085)
Net cash used in financing activities	(58,429)	(33,078)
Effect of exchange rate changes on cash	(2,366)	3,289
Net decrease in cash, cash equivalents and restricted cash for the period	(39,300)	(28,758)
Cash, cash equivalents and restricted cash, beginning of year	108,545	134,392
Cash, cash equivalents and restricted cash, end of period	69,245	105,634
Cash, cash equivalents and restricted cash associated with assets held for sale, end of period	0	(8,909)
Cash, cash equivalents and restricted cash, end of period	$ 69,245	$ 96,725