Other Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Liabilities Disclosure [Abstract]
Unrecognized Tax Benefits	$ 12,742	$ 5,925	$ 3,180	$ 2,980
Off-market Lease, Unfavorable	394	499
Other Liabilities	5	5
Other liabilities	$ 13,141	$ 6,429