Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net income	$ 68,565	$ 125,223
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	12,300	10,024
Amortization of intangible assets	17,460	15,721
Amortization of original issue discount	2,494	2,573
Amortization of deferred financing costs	1,874	2,272
Loss on extinguishment of debt	4,795	1,836
(Gain) loss on change in contractual interest rate	$ 2,381	(16,014)
Gain on remeasurement of contingent consideration		(4,877)
Provision for losses on accounts receivable	$ 324	344
Deferred income taxes	27,319	35,572
Loss on disposal of property and equipment	53	135
Share-based compensation expense	6,889	9,403
Net changes in operating assets and liabilities:
Accounts receivable	(14,838)	(28,747)
Inventories	(28,319)	(9,501)
Other assets	572	2,768
Accounts payable	(12,226)	20,215
Accrued wages and employee benefits	(1,167)	(12,037)
Other accrued liabilities	(2,644)	(3,232)
Excess tax benefits from equity awards	(8,973)	(9,167)
Net cash provided by operating activities	76,859	142,511
Investing Activities
Proceeds from sale of property and equipment	105	7
Expenditures for property and equipment	(20,108)	(22,722)
Acquisition of business	(74,477)	(5,309)
Net cash used in investing activities	(94,480)	(28,024)
Financing Activities
Proceeds from short-term borrowings	14,320	$ 4,900
Proceeds from long-term borrowings	100,000
Repayments of short-term borrowings	(15,198)	$ (24,741)
Repayments of long-term borrowings and capital lease obligations	(150,595)	$ (68,905)
Stock repurchases	(64,378)
Payment of debt issuance costs	(2,067)	$ (4)
Cash dividends paid	(1,429)	(705)
Taxes paid related to the net share settlement of equity awards	(12,387)	(10,255)
Excess tax benefits from equity awards	8,973	9,167
Proceeds from exercise of stock options	7	21
Net cash used in financing activities	(122,754)	(90,522)
Effect of exchange rate changes on cash and cash equivalents	(2,932)	(950)
Net (decrease) increase in cash and cash equivalents	(143,307)	23,015
Cash and cash equivalents at beginning of period	189,761	150,147
Cash and cash equivalents at end of period	$ 46,454	$ 173,162