Goodwill And Indefinite-Lived Intangible Assets Impairment Test - Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Feb. 29, 2012 Bluff
Schedule of Definite and Finite Assets [Line Items]
Definite-lived intangible assets, gross carrying amount	$ 64,929	$ 64,589	$ 300
Definite-lived intangible assets, accumulated amortization	(26,402)	(20,672)
Intangible Assets, Net (Excluding Goodwill)	103,237	103,827
Definite-lived intangible assets, net book value	38,527	43,917
Indefinite-lived intangible assets, gross carrying value	64,710	59,910	4,800
Intangible Assets Excluding Goodwill, Gross	$ 129,639	$ 124,499