Goodwill and Intangible Assets Schedule of Expected Amortization Expense (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Schedule of Expected Amortization Expense [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 8,259
Finite-Lived Intangible Assets, Amortization Expense, Year Two	6,160
Finite-Lived Intangible Assets, Amortization Expense, Year Three	5,194
Finite-Lived Intangible Assets, Amortization Expense, Year Four	3,357
Finite-Lived Intangible Assets, Amortization Expense, Year Five	2,750
Amortization of Intangible Assets	$ 9,361