Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Assets and Liabilities [Line Items]
Net operating loss carryforwards	$ 95,960	$ 79,317
Inventory adjustments	45,201	39,595
Allowance for doubtful accounts	17,008	14,401
Accrued expenses	56,222	61,589
Interest carryforward	46,876	52,606
Stock-based compensation awards	14,266	12,330
Other comprehensive income items	15,055	12,475
Other	3,381	0
Deferred Tax Assets, Gross	293,969	272,313
Valuation Allowance	(24,409)	(30,675)
Total deferred tax assets	269,560	241,638
Goodwill	(31,107)	(9,060)
Depreciation	(61,896)	(57,346)
Intangible Assets	(61,690)	(60,100)
Other	0	(1,916)
Total deferred tax liabilities	(154,693)	(128,422)
Total net deferred tax assets	$ 114,867	$ 113,216