Premises and Equipment Premises and Equipment (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Capital Leases, Future Minimum Payments Due [Abstract]
Capital Leases, Future Minimum Payments Due Current	$ 238
Capital Leases, Future Minimum Payments Due in Two Years	828
Capital Leases, Future Minimum Payments Due in Three Years	195
Capital Leases, Future Minimum Payments Due in Four Years	197
Capital Leases, Future Minimum Payments Due in Five Years	200
Capital Leases, Future Minimum Payments Due Thereafter	749
Capital Leases, Future Minimum Payments Due	2,407
Capital Leases, Future Minimum Payments, Interest Included in Payments	619
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	1,788
Capital Lease Obligations, Current	98
Capital Lease Obligations, Noncurrent	1,690
Operating Leases, Future Minimum Payments Due [Abstract]
Operating Leases, Future Minimum Payments Due Current	2,317
Operating Leases, Future Minimum Payments Due in Two Years	2,227
Operating Leases, Future Minimum Payments Due in Three Years	2,043
Operating Leases, Future Minimum Payments Due in Four Years	1,813
Operating Leases, Future Minimum Payments Due in Five Years	1,506
Operating Leases, Future Minimum Payments Due Thereafter	4,136
Operating Leases, Future Minimum Payments Due	14,042
Operating And Capital Leases Future Minimum Payments Due [Abstract]
Operating and Capital Leases, Future Minimum Payments Due Current	2,555
Operating and Capital Leases, Future Minimum Payments Due in Two Years	3,055
Operating and Capital Leases, Future Minimum Payments Due in Three Years	2,238
Operating and Capital Leases, Future Minimum Payments Due in Four Years	2,010
Operating and Capital Leases, Future Minimum Payments Due in Five Years	1,706
Operating and Capital Leases, Future Minimum Payments Due Thereafter	4,885
Operating and Capital Leases, Future Minimum Payments Due	$ 16,449