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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Income Tax Disclosure [Abstract]          
Percentage of taxable income required to be distributed to shareholders     90.00%    
State tax expense $ 674 $ 901 $ 2,680 $ 2,330  
Income tax provision (271) (1,195) (854) (1,234)  
Current portion of income tax (provision) benefit (428) 171 812 2,447  
Deferred portion of income tax (provision) benefit 157 (1,366) (1,666) (3,681)  
Deferred Tax Assets, Net $ 5,753   $ 5,753   $ 6,607