Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 4,815	$ 5,501	$ 14,714	$ 15,526
Other comprehensive income (loss), net of tax:
Net unrealized holding gains (losses) arising during the period (tax effects for the three months 2015: $2,178; 2014: ($695), tax effects for the nine months 2015: $1,338; 2014: $3,472)		4,045	(1,290)	2,485	6,449
Reclassification adjustment for net realized (gains) losses on securities recorded in income [1] (tax effects for the three months 2014: ($9), tax effects for the nine months 2015: ($97); 2014: ($9))	[1]	0	(17)	(181)	(17)
Other comprehensive income (loss)		4,045	(1,307)	2,304	6,432
Total comprehensive income		$ 8,860	$ 4,194	$ 17,018	$ 21,958

[1] Amounts are included in net gains on sales of securities on the Consolidated Statements of Income in total noninterest income.