Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (24,945)	$ 25,752
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Loss (income) from discontinued operations	4	(201)
Depreciation and amortization	59,817	65,011
Deferred income tax (benefit) expense	(20,206)	(2,331)
Tax impact of share-based payment arrangements		(215)
Provision for bad debt	784	(1,134)
Gain on disposals of assets	(372)	(628)
Non-cash compensation charge	10,569	10,697
Amortization of deferred financing costs	390	390
Other, net	665	(136)
Changes in operating assets and liabilities, net of effect from acquired businesses:
Accounts receivable	62,321	206,706
Inventories	7,677	(6,939)
Accounts payable and accrued liabilities	(14,798)	(70,666)
Taxes payable	5,908	5,005
Other operating assets and liabilities, net	(5,688)	(9,816)
Net cash flows provided by continuing operating activities	82,126	221,495
Net cash flows (used in) provided by discontinued operating activities	(6)	314
Net cash flows provided by operating activities	82,120	221,809
Cash flows from investing activities:
Capital expenditures	(18,398)	(68,740)
Acquisitions of businesses, net of cash acquired		(33,427)
Proceeds from disposition of property, plant and equipment	546	1,061
Other, net	(1,551)	(392)
Net cash flows used in continuing investing activities	(19,403)	(101,498)
Cash flows from financing activities:
Revolving credit (repayments) borrowings, net	(42,422)	10,224
Debt and capital lease repayments	(263)	(273)
Issuance of common stock from share-based payment arrangements	367	2,209
Purchase of treasury stock		(90,659)
Tax impact of share-based payment arrangements		215
Shares added to treasury stock as a result of net share settlements due to vesting of restricted stock	(3,924)	(6,750)
Other, net	(1)
Net cash flows used in continuing financing activities	(46,243)	(85,034)
Effect of exchange rate changes on cash	(490)	892
Net change in cash and cash equivalents	15,984	36,169
Cash and cash equivalents, beginning of period	35,973	53,263
Cash and cash equivalents, end of period	$ 51,957	$ 89,432