Borrowings - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Debt Disclosure [Abstract]
Federal Home Loan Bank advances are secured by first and second mortgage loans and mortgage warehouse loans	$ 256.3
Maximum amount of outstanding agreements	141.4	138.4
Daily average amount of outstanding agreements	137.6	135.2
Maturity date	Sep. 13, 2020
Available credit lines with various money center banks	$ 311.8

Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant