Mortgage Banking Activities, Loans Sold With Recourse (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Residential Mortgage Loans Sold With Recourse [Abstract]
Carrying amount of residential mortgage loans sold and subject to recourse	$ 187,000,000	$ 220,000,000
Percentage of loans sold with recourse and either more than 90 days past due or in bankruptcy or foreclosure (in hundredths)	3.00%
Principal balance of loans sold with recourse and either 90 days or more past due or in bankruptcy or foreclosure	5,900,000
Percentage of loans sold with recourse and 30 to 89 days past due (in hundredths)	4.00%
Principal balance of loans sold with recourse and 30 to 89 days past due	7,700,000
Activity in the allowance for losses on loans sold with recourse [Roll forward]
Beginning balance	9,041,000	11,359,000
Provision for recourse losses	(14,000)	(761,000)
Loans charged off, net	(224,000)	(523,000)
Ending balance	8,803,000	10,075,000
Residenital Mortgage Loans Subject to Repurchase Under Standard Representations and Warranties [Abstract]
Number of mortgages purchased under repurchase agreement with government sponsored entities.	11
Purchase price of loans purchased under repurchase agreement with government sponsored entities	1,300,000
Losses incurred on actual repurchased loans from governmental sponsored entities with warranties	0
Number of loans sold under standard representations and warranties indemnified	7
Number of loans with unresolved deficiency requests	647	430
Aggregate outstanding principal balance subject to unresolved deficiency requests	81,909,000	50,861,000
Unpaid principal balance of mortgage loans subject to indemnification under standard representations and warranties	1,561,000	1,414,000
Activity in accrual for losses on mortgage loans sold under standard representation and warranties [Roll Forward]
Beginning balance	8,845,000	5,291,000
Provision for repurchase losses	(842,000)	976,000
Losses on repurchases and indemnifications, net	(126,000)	(390,000)
Ending balance	$ 7,877,000	$ 5,877,000