Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities
Net income (loss)	$ 22,384	$ 5,509
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	51,563	57,790
Stock-based compensation	13,300	10,879
Amortization of prepaid debt fees	806	1,851
Deferred taxes, net	17,772	14,744
Restructuring, non-cash	5,153	1,018
Other adjustments, net	(734)	1,877
Changes in operating assets and liabilities:
Accounts receivable	(32,652)	(14,193)
Inventories	3,207	(73,464)
Other current assets	(15,591)	(998)
Other long-term assets	8,499	(2,529)
Accounts payable, other current liabilities, and taxes payable	(5,830)	(11,119)
Wages and benefits payable	11,516	3,787
Unearned revenue	(8,684)	6,536
Warranty	(9,900)	20,207
Other operating, net	21,072	(1,741)
Net cash provided by operating activities	81,881	20,154
Investing activities
Acquisitions of property, plant, and equipment	(30,563)	(33,324)
Business acquisitions, net of cash and cash equivalents acquired	(951)	(5,754)
Other investing, net	(1,258)	545
Net cash used in investing activities	(32,772)	(38,533)
Financing activities
Proceeds from borrowings	0	89,709
Payments on debt	(29,031)	(30,186)
Issuance of common stock	1,993	2,229
Repurchase of common stock	0	(35,278)
Other financing, net	(3,658)	1,881
Net cash provided by (used in) financing activities	(30,696)	28,355
Effect of foreign exchange rate changes on cash and cash equivalents	1,949	(12,889)
Increase (decrease) in cash and cash equivalents	20,362	(2,913)
Cash and cash equivalents at beginning of period	131,018	112,371
Cash and cash equivalents at end of period	151,380
Supplemental disclosure of cash flow information:
Income taxes, net	17,207	22,578
Interest, net of amounts capitalized	$ 7,592	$ 7,549