Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended
	Sep. 30, 2013 Quarter	Sep. 30, 2012 Quarter	Dec. 31, 2008 Quarter	Jun. 30, 2014	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Credit card and other personal loans charged off period no later than period				180 days
Number of Quarters	19	6	16
Percentage of excess loan balance for watch category				90.00%
Impaired loans measurement				Impaired loans measured for impairment generally include (1) non-accruing Special mention, Substandard and Doubtful loans in excess of $250,000; (2) Substandard and Doubtful loans in excess of $500,000; (3) Special Mention loans in excess of $500,000 if any of the loans in the relationship are more than 30 days past due or if the borrower has filed for bankruptcy; and (4) all troubled debt restructurings ("TDRs").
Loan Receivables				$ 105,608,000	$ 105,842,000
Special Mention
Significant Accounting Policies [Line Items]
Loan Receivables				5,502,000	2,904,000
Loan due days				30 days
Residential First Mortgages
Significant Accounting Policies [Line Items]
Minimum balance in order to assign a risk rating grade				1,000,000
Consumer Loans
Significant Accounting Policies [Line Items]
Minimum balance in order to assign a risk rating grade				250,000
Minimum
Significant Accounting Policies [Line Items]
Number of days past due for a loan to remain on accrual status				90 days
Minimum | Non-accruing Special mention, Substandard and Doubtful loans
Significant Accounting Policies [Line Items]
Loan Receivables				250,000
Minimum | Substandard and Doubtful loans
Significant Accounting Policies [Line Items]
Loan Receivables				500,000
Minimum | Special Mention
Significant Accounting Policies [Line Items]
Loan Receivables				$ 500,000