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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net income	$ 23,523	$ 49,395	$ 58,184
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,964	56,842	55,114
Deferred income taxes	(10,398)	5,350	26,049
(Income) loss from discontinued operations	81	(1,481)	268
Restructuring charges	8,380	1,587	1,004
Legal settlement	8,500
Impairment charges (recoveries)	5,346	(35)	(29,098)
(Gains) losses on dispositions of property and other assets	(1,475)	473	1,420
Share-based compensation expense	7,190	4,870	10,969
Multi-employer pension plan withdrawal	15,693
Other non-cash items, net	3,791	4,306	5,029
Change in operating assets and liabilities (excluding the impact of acquisitions):
Receivables	(16,959)	(6,200)	(2,338)
Inventories	(328)	(1,573)	121
Current contract costs	(6,333)	(4,976)	2,544
Accounts payable	9,726	(1,645)	7,546
Restructuring liabilities	(6,047)	(1,716)	(1,954)
Accrued compensation	6,853	(12,818)	(5,152)
Contract liabilities	16,796	3,677	(11,314)
Payments on operating lease obligations	(28,146)
Income taxes payable	195	(7,696)	5,820
Other assets and liabilities, net	12,788	2,235	(11,989)
Net cash provided by operating activities	108,140	90,595	112,223
Cash flows from investing activities
Capital expenditures	(76,147)	(83,345)	(56,621)
Proceeds from insurance			31,570
Cash paid for acquisitions, net	(90,992)	(4,628)	(1,501)
Proceeds from dispositions of property and other assets	1,583	925	947
Net cash used in investing activities	(165,556)	(87,048)	(25,605)
Cash flows from financing activities
Proceeds from borrowings	200,473	146,580	90,004
Payments on debt and finance lease obligations	(115,708)	(128,211)	(135,801)
Dividends paid on common stock	(8,094)	(8,154)	(8,160)
Distributions to noncontrolling interest	(407)
Debt issuance costs	(39)	(1,823)	(5)
Payment of payroll taxes on stock-based compensation through shares withheld or repurchased	(3,046)	(1,209)	(2,119)
Common stock purchased for treasury		(17,174)
Proceeds from exercise of stock options	293	84
Net cash provided by (used in) financing activities	73,472	(9,907)	(56,081)
Effect of exchange rate changes on cash and cash equivalents	1,050	(2,470)	2,286
Net change in cash and cash equivalents	17,106	(8,830)	32,823
Cash and cash equivalents, beginning of year	44,893	53,723	20,900
Cash and cash equivalents, end of year	$ 61,999	$ 44,893	$ 53,723

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