Condensed 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	$ 32,401	$ 64,317
Depreciation and amortization	20,751	20,522
Unrealized (gain) loss on foreign exchange, net	(10,892)	1,392
Asset impairment charges	3,230	202
Inventory write-down charges	2,029
Provision for doubtful accounts, net	3,867	1,340
Share based compensation	8,331	7,540
Other non-cash items	732	733
Accounts receivable	(94,840)	(75,124)
Inventories	(30,769)	(923)
Prepaid expenses and other assets	(563)	(13,460)
Accounts payable	34,015	12,385
Accrued expenses and other liabilities	7,760	12,551
Accrued restructuring	3,839
Income taxes	3,130	6,266
Cash provided by (used in) operating activities	(16,979)	37,741
Cash flows from investing activities:
Cash paid for purchases of property and equipment	(11,376)	(19,676)
Proceeds from disposal of property and equipment	43	545
Cash paid for intangible assets	(18,944)	(11,833)
Restricted cash	(788)	(1,295)
Cash used in investing activities	(31,065)	(32,259)
Cash flows from financing activities:
Proceeds from preferred stock offering, net of issuance costs of $15.8 million and $0.0 million, respectively	182,220
Dividends paid	(2,134)
Proceeds from bank borrowings		14,572
Repayment of bank borrowings and capital lease obligations	(2,372)	(11,334)
Issuances of common stock	1,209	1,439
Purchase of treasury stock	(47,005)	(12,533)
Repurchase of common stock for tax withholding	(787)	(256)
Cash provided by (used in) financing activities	131,131	(8,112)
Effect of exchange rate changes on cash	8,722	(2,364)
Net increase (decrease) in cash and cash equivalents	91,809	(4,994)
Cash and cash equivalents - beginning of period	317,144	294,348
Cash and cash equivalents - end of period	408,953	289,354
Supplemental disclosure of cash flow information-cash paid during the period for:
Interest	204	525
Income taxes	23,174	10,658
Supplemental disclosure of non-cash, investing, and financing activities:
Assets acquired under capitalized leases		61
Accrued purchases of property and equipment	3,577	2,715
Accrued purchases of intangibles	8,667	1,803
Accrued dividends	3,033
Accretion of dividend equivalents	$ 1,339