Annual report pursuant to Section 13 and 15(d)

Statements of Cash Flows - Supplemental Disclosures of Cash Flows Information (Detail)

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Statements of Cash Flows - Supplemental Disclosures of Cash Flows Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash paid during the period for:      
Interest on junior subordinated debentures $ 12,610 $ 12,610 $ 12,610
Interest 45,260 38,880 38,192
Income taxes 1,078 479 749
Non-cash investing activities:      
Property and equipment purchased with capital lease 358 155  
Junior Subordinated Debentures [Member]
     
Cash paid during the period for:      
Interest on junior subordinated debentures $ 12,232 $ 12,232 $ 12,232