Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Allowance for Loan Losses:
Beginning balance	$ 18,255		$ 22,133		$ 20,068		$ 21,958
Provision for loan losses	1,530	[1]	300	[2]	2,435	[3]	5,275	[4]
Loans charged off	(2,656)		(1,512)		(7,142)		(9,633)
Recoveries	378		1,083		2,146		4,404
Ending Balance	17,507		22,004		17,507		22,004
Commercial
Allowance for Loan Losses:
Beginning balance	10,850		14,531		12,450		10,987
Provision for loan losses	589	[1]	(486)	[2]	270	[3]	2,438	[4]
Loans charged off	(1,310)		(388)		(2,956)		(2,273)
Recoveries	51		361		416		2,866
Ending Balance	10,180		14,018		10,180		14,018
Residential
Allowance for Loan Losses:
Beginning balance	1,374		1,592		1,585		5,426
Provision for loan losses	72	[1]	(266)	[2]	84	[3]	234	[4]
Loans charged off	(153)		(284)		(958)		(4,683)
Recoveries	34		398		616		463
Ending Balance	1,327		1,440		1,327		1,440
Consumer
Allowance for Loan Losses:
Beginning balance	3,769		3,637		3,650		3,879
Provision for loan losses	1,047	[1]	504	[2]	2,380	[3]	1,348	[4]
Loans charged off	(1,193)		(840)		(3,228)		(2,677)
Recoveries	293		324		1,114		1,075
Ending Balance	3,916		3,625		3,916		3,625
Unallocated
Allowance for Loan Losses:
Beginning balance	2,262		2,373		2,383		1,666
Provision for loan losses	(178)	[1]	548	[2]	(299)	[3]	1,255	[4]
Loans charged off	0		0
Recoveries	0		0
Ending Balance	$ 2,084		$ 2,921		$ 2,084		$ 2,921

[1] Provision before decrease of $24 thousand in 2014 for increase in FDIC indemnification asset

[2] Provision before increase of $195 thousand in 2013 for decrease in FDIC indemnification asset

[3] Provision before increase of $675 thousand in 2014 for decrease in FDIC indemnification asset

[4] Provision before increase of $1.2 million in 2013 for decrease in FDIC indemnification asset