Accumulated Other Comprehensive Income (Loss), Net - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on sales of securities available for sale, net		$ (1,554)	$ (140)	$ (186)
Income tax expense		2,813	2,715	2,341
Net income		8,064	7,830	7,486
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income		(1,026)	(96)	(119)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gains on sales of securities available for sale, net	[1]	(1,554)	(140)	(186)
Income tax expense	[1]	528	48	63
Net income		(1,026)	(96)	(119)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Derivatives [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	[2]	0	2	(2)
Other operating expense	[2]	$ 0	$ (6)	$ 6

[1] For more information related to unrealized gains on securities available for sale, see Note 2, "Securities".

[2] For more information related to unrealized losses on derivatives, see Note 24, "Derivatives".