Unaudited Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 23,058	$ 16,205
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,814	6,923
Amortization of deferred financing costs	148	12
Accretion of debt discount	0	55
Gain on sale of assets	(1,389)	(2,568)
Stock compensation expense	4,756	5,820
Deferred income tax benefit	(446)	(422)
Excess tax benefit related to share-based awards	(3,373)	(432)
Changes in current assets and liabilities:
Restricted cash	0	150
Accounts receivable, net	(549)	(2,540)
Inventories	(18,828)	(5,970)
Other current assets	(5,323)	2,045
Accounts payable	10,737	(8,293)
Accrued liabilities	(683)	1,043
Income taxes payable	1,540	(638)
Interest payable	(22)	93
Net cash provided by operating activities	18,440	11,483
Cash flows from investing activities:
Capital expenditures	(9,245)	(9,119)
Proceeds from sale of assets	1,982	3,026
Payments for acquisition, net of cash acquired	(5,704)	(53,396)
Purchase of patents and other intangible assets	(595)	0
Net cash used in investing activities	(13,562)	(59,489)
Cash flows from financing activities:
Repayments of indebtedness	(6,720)	(7,649)
Proceeds of borrowings	0	26,190
Borrowings on revolving credit facility	204,750	153,571
Repayments on revolving credit facility	(203,226)	(116,014)
Debt issuance costs	(127)	(991)
Issuance costs of preferred stock and detachable warrants	0	(200)
Excess tax benefit related to share-based awards	3,373	432
Acquisition of treasury stock related to share-based awards	(5,961)	(4,859)
Proceeds from sale of common stock	505	352
Proceeds from exercise of stock options	450	128
Proceeds from exercise of stock warrants	1,545	6
Net cash (used in) provided by financing activities	(5,411)	50,966
Effect of changes in exchange rates on cash and cash equivalents	29	(157)
Net (decrease) increase in cash and cash equivalents	(504)	2,803
Cash and cash equivalents at the beginning of period	2,730	2,700
Cash and cash equivalents at the end of period	$ 2,226	$ 5,503