Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Fair Value of Company's Fixed Rate Senior Notes and Junior Subordinated Debentures (Detail)

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Fair Value Measurements - Fair Value of Company's Fixed Rate Senior Notes and Junior Subordinated Debentures (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
10.875% Senior Notes [Member] | Estimated Fair Value [Member]
   
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Debt $ 285,538 $ 283,881
10.875% Senior Notes [Member] | Carrying Value [Member]
   
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Debt 271,750 272,942
Junior Subordinated Debentures [Member] | Estimated Fair Value [Member]
   
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Debt 131,480 128,949
Junior Subordinated Debentures [Member] | Carrying Value [Member]
   
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]    
Debt $ 114,941 $ 115,132