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DISCLOSURES REGARDING FAIR VALUES OF FINANCIAL INSTRUMENTS - Balance Sheet Location (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2013
Carrying Amount [Member]
Dec. 31, 2012
Carrying Amount [Member]
Sep. 30, 2013
Fair Value [Member]
Dec. 31, 2012
Fair Value [Member]
Sep. 30, 2013
Maximum [Member]
Fair value, balance sheet grouping [Line Items]              
Investment Repurchase Agreement Initial Term             120 days
Financial assets [Abstract]              
Residential mortgage loans     $ 7,242 $ 8,063 $ 7,300 $ 8,200  
Interest rate swap agreements at fair value 1,558 169 1,558 169 1,558 169  
Financial liabilities [Abstract]              
Repurchase arrangements with initial terms of greater than 120 days, Fair Value     36,299 41,520 36,300 41,500  
Unsecured borrowings     103,095 103,095 104,100 104,600  
Interest rate swap agreements     $ 11,425 $ 32,868 $ 11,425 $ 32,868