XML 119 R59.htm IDEA: XBRL DOCUMENT v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Jun. 30, 2013
Internal Revenue Service (IRS) [Member]
Dec. 31, 2012
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]          
Minimum annual distribution of adjusted taxable income for REIT qualification 90.00%        
Unrecognized tax benefits, increases resulting from prior period tax positions       $ 797 $ 797
Income tax benefit   612      
Net deferred tax assets     $ 38,559