Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Percentage of taxable income required to be distributed to shareholders	90.00%
State tax expense	$ 863	$ 460
Income tax (provision) benefit	174	228
Current portion of income tax (provision) benefit	2,835	3,051
Deferred portion of income tax (provision) benefit	(2,661)	2,823
Deferred Tax Assets, Net	$ 6,781		$ 6,607