Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (27,204)	$ (3,261)
Adjustments to reconcile net loss to net cash provided by operations:
Impairments and other non-cash charges	8,617	0
Depreciation and amortization	19,201	21,069
Stock-based compensation expense	5,613	6,510
Provision for deferred income taxes	546	(3,205)
Net provision for doubtful accounts	1,582	1,033
Gain on sale of assets	(1,841)	(528)
Gain on extinguishment of debt	(1,894)	0
Change in assets and liabilities:
Decrease in receivables	18,006	113,746
Decrease in inventories	18,981	2,804
Increase in other assets	(2,204)	(2,461)
Decrease in accounts payable	(20,720)	(38,744)
Increase (decrease) in accrued liabilities and other	1,143	(15,166)
Net cash provided by operating activities	19,826	81,797
Cash flows from investing activities:
Capital expenditures	(26,652)	(34,313)
Increase in restricted cash	(22)	0
Proceeds from sale of property, plant and equipment	2,553	1,144
Net cash used in investing activities	(24,121)	(33,169)
Cash flows from financing activities:
Borrowings on lines of credit	4,268	4,718
Payments on lines of credit	(5,034)	(5,949)
Purchase of senior notes	(9,206)	0
Debt issuance costs	(1,707)	(1,697)
Other financing activities	2,170	(1,487)
Proceeds from employee stock plans	4	359
Purchases of treasury stock	(1,093)	(1,769)
Net cash used in financing activities	(10,598)	(5,825)
Effect of exchange rate changes on cash	903	(4,598)
Net increase (decrease) in cash and cash equivalents	(13,990)	38,205
Cash and cash equivalents at beginning of year	107,138	85,052
Cash and cash equivalents at end of period	93,148	123,257
Cash paid (received) for:
Income taxes (net of refunds)	(22,010)	9,137
Interest	$ 4,143	$ 4,412