Other Real Estate Owned - Changes in OREO (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015 USD ($) property	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) property	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Foreclosed Property [Roll Forward]
Beginning balance			$ 9,779	$ 9,617	$ 9,617
Net proceeds from sales			(3,466)	(1,913)	(4,306)
Net gains (losses) on sales	$ 366	$ 331	646	460	743
Transfers in			3,619	882	2,919
Cash additions			308	1,103	1,330
Impairment charge			(355)	(338)	(524)
Ending balance	$ 10,531		$ 10,531		9,779
Loans [Member]
Real Estate Owned Disclosure [Line Items]
Number of Real Estate Properties | property	4		4
Foreclosed Property [Roll Forward]
Beginning balance			$ 349	1,725	1,725
Net proceeds from sales			(1,475)		(1,336)
Net gains (losses) on sales			26		59
Transfers in			1,456
Impairment charge					(99)
Ending balance	$ 356		$ 356		349
Tax Lien [Member]
Real Estate Owned Disclosure [Line Items]
Number of Real Estate Properties | property	80		80
Foreclosed Property [Roll Forward]
Beginning balance			$ 9,430	$ 7,892	7,892
Net proceeds from sales			(1,991)		(2,970)
Net gains (losses) on sales			620		684
Transfers in			2,163		2,919
Cash additions			308		1,330
Impairment charge			(355)		(425)
Ending balance	$ 10,175		$ 10,175		$ 9,430