Intangible Assets and Goodwill 2 (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Finite lived intangible assets future amortization expense
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 28,120
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	36,919
Finite-Lived Intangible Assets, Amortization Expense, Year Two	32,383
Finite-Lived Intangible Assets, Amortization Expense, Year Three	24,071
Finite-Lived Intangible Assets, Amortization Expense, Year Four	11,409
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	20,538
Finite lived intangible assets, net	$ 153,440