Segment Reporting (Schedule of Segment Reporting Information by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Interest income	$ 10,447	$ 9,908
Interest expense	(514)	(665)
Provision for credit losses	(427)	(450)
Noninterest income	4,807	4,541
Noninterest expense	(9,651)	(9,339)
Income (loss) before taxes	4,662	3,995	$ 15,900	$ 11,500
Income tax (expense) benefit	(1,862)	(1,535)
Net income (loss)	2,800	2,460
Total assets	1,166,896	1,131,175	$ 1,160,271
Operating Segments [Member] | Community Banking [Member]
Segment Reporting Information [Line Items]
Interest income	10,387	9,846
Interest expense	(514)	(665)
Provision for credit losses	(427)	(450)
Noninterest income	1,883	1,830
Noninterest expense	(5,861)	(5,297)
Net intersegment (expense) income	(1,677)	(1,936)
Income (loss) before taxes	3,791	3,328
Income tax (expense) benefit	(1,513)	(1,279)
Net income (loss)	2,278	2,049
Total assets	1,150,411	1,103,842
Operating Segments [Member] | Insurance Products and Services [Member]
Segment Reporting Information [Line Items]
Noninterest income	2,924	2,711
Noninterest expense	(1,809)	(1,709)
Net intersegment (expense) income	(198)	(172)
Income (loss) before taxes	917	830
Income tax (expense) benefit	(367)	(319)
Net income (loss)	550	511
Total assets	9,345	9,133
Parent Company [Member] | Corporate, Non-Segment [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Interest income	60	62
Noninterest expense	(1,981)	(2,333)
Net intersegment (expense) income	1,875	2,108
Income (loss) before taxes	(46)	(163)
Income tax (expense) benefit	18	63
Net income (loss)	(28)	(100)
Total assets	$ 7,141	$ 18,200