Financial Instruments with Off-Balance Sheet Risk (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Financial Instruments with Off-Balance Sheet Risk
Financial instruments with off-balance sheet risk	$ 337,181,000	$ 131,450,000
Undisbursed loans and unused lines of credit
Financial Instruments with Off-Balance Sheet Risk
Allowance for credit losses	341,000	127,000
Commitments to extend credit
Financial Instruments with Off-Balance Sheet Risk
Financial instruments with off-balance sheet risk	337,200,000	131,500,000
Commitments to extend credit | Warehouse
Financial Instruments with Off-Balance Sheet Risk
Financial instruments with off-balance sheet risk	207,500,000
Commitments to extend credit | Commercial and industrial
Financial Instruments with Off-Balance Sheet Risk
Financial instruments with off-balance sheet risk	$ 77,200,000