Unaudited Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 37,330	$ 25,173
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,276	10,948
Amortization of deferred financing costs	257	65
Accretion of debt discount	0	55
Gain on sale of assets	(2,552)	(3,452)
Stock compensation expense	7,429	8,697
Deferred income tax provision (benefit)	237	(315)
Excess tax benefit related to share-based awards	(3,425)	(835)
Changes in current assets and liabilities:
Restricted cash	(450)	150
Accounts receivable, net	(3,896)	(6,521)
Inventories	(18,035)	(2,055)
Other current assets	(4,957)	259
Accounts payable	12,617	(17,341)
Accrued liabilities	1,019	4,931
Income taxes payable	1,082	1,585
Interest payable	(35)	16
Net cash provided by operating activities	39,897	21,360
Cash flows from investing activities:
Capital expenditures	(13,494)	(9,985)
Proceeds from sale of assets	3,322	4,595
Payments for acquisitions, net of cash acquired	(5,704)	(53,396)
Purchase of patents and other intangible assets	(780)	0
Net cash used in investing activities	(16,656)	(58,786)
Cash flows from financing activities:
Repayments of indebtedness	(8,506)	(9,777)
Proceeds of borrowings	0	26,190
Borrowings on revolving credit facility	305,750	231,696
Repayments on revolving credit facility	(317,798)	(204,319)
Debt issuance costs	(256)	(1,207)
Issuance costs of preferred stock and detachable warrants	0	(200)
Excess tax benefit related to share-based awards	3,425	835
Acquisition of treasury stock related to share-based awards	(6,060)	(5,325)
Proceeds from sale of common stock	763	567
Proceeds from exercise of stock options	461	491
Proceeds from exercise of stock warrants	1,545	323
Net cash (used in) provided by financing activities	(20,676)	39,274
Effect of changes in exchange rates on cash and cash equivalents	(38)	(179)
Net increase in cash and cash equivalents	2,527	1,669
Cash and cash equivalents at the beginning of period	2,730	2,700
Cash and cash equivalents at the end of period	$ 5,257	$ 4,369