Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Allowance for Loan Losses:
Beginning balance	$ 20,068		$ 21,958
Provision for loan losses	1,725	[1]	2,275	[2]
Loans charged off	(2,161)		(1,748)
Recoveries	776		2,787
Ending Balance	20,408		25,272
Commercial
Allowance for Loan Losses:
Beginning balance	12,450		10,987
Provision for loan losses	732	[1]	1,264	[2]
Loans charged off	(936)		(450)
Recoveries	207		2,343
Ending Balance	12,453		14,144
Residential
Allowance for Loan Losses:
Beginning balance	1,585		5,426
Provision for loan losses	66	[1]	197	[2]
Loans charged off	(172)		(272)
Recoveries	102		49
Ending Balance	1,581		5,400
Consumer
Allowance for Loan Losses:
Beginning balance	3,650		3,879
Provision for loan losses	800	[1]	233	[2]
Loans charged off	(1,053)		(1,026)
Recoveries	467		395
Ending Balance	3,864		3,481
Unallocated
Allowance for Loan Losses:
Beginning balance	2,383		1,666
Provision for loan losses	127	[1]	581	[2]
Loans charged off	0		0
Recoveries	0		0
Ending Balance	$ 2,510		$ 2,247

[1] Provision before increase of $235 thousand in 2014 for decrease in FDIC indemnification asset

[2] Provision before increase of $746 thousand in 2013 for decrease in FDIC indemnification asset