Unaudited Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income	$ 25,173	$ 26,590
Adjustments to reconcile net income to net cash provided by operating activities:
Change in fair value of warrant liability	0	(2,649)
Depreciation and amortization	10,948	8,468
Amortization of deferred financing costs	65	739
Accretion of debt discount	55	2,862
Gain on sale of assets	(3,452)	(3,039)
Stock compensation expense	8,697	9,571
Deferred income tax provision	(315)	1,018
Excess tax benefit related to share-based awards	(835)	(579)
Non-cash loss on extinguishment of debt	0	4,270
Changes in current assets and liabilities:
Restricted cash	150	0
Accounts receivable, net	(6,521)	532
Inventories	(2,055)	(4,287)
Other current assets	259	(2,213)
Accounts payable	(17,341)	808
Accrued liabilities	4,931	1,092
Income taxes payable	1,585	(2,993)
Interest payable	16	(1,733)
Net cash provided by operating activities	21,360	38,457
Cash flows from investing activities:
Capital expenditures	(9,985)	(15,243)
Proceeds from sale of assets	4,595	3,376
Payments for acquisition, net of cash acquired	(53,396)	0
Purchase of patents and other intangible assets	0	(31)
Net cash used in investing activities	(58,786)	(11,898)
Cash flows from financing activities:
Repayments of indebtedness	(9,777)	(51,828)
Proceeds of borrowings	26,190	0
Borrowings on revolving credit facility	231,696	0
Repayments on revolving credit facility	(204,319)	0
Debt issuance costs	(1,207)	0
Issuance costs of preferred stock and detachable warrants	(200)	0
Excess tax benefit related to share-based awards	835	579
Purchase of treasury stock	(5,325)	(497)
Proceeds from sale of common stock	567	0
Proceeds from exercise of stock options	491	167
Proceeds from the exercise of stock warrants	323	263
Net cash provided by (used in) financing activities	39,274	(51,316)
Effect of changes in exchange rates on cash and cash equivalents	(179)	(16)
Net increase (decrease) in cash and cash equivalents	1,669	(24,773)
Cash and cash equivalents at the beginning of period	2,700	46,682
Cash and cash equivalents at the end of period	$ 4,369	$ 21,909