Stock Incentive Plans (Details) - Stock incentive and equity plans [Member]	3 Months Ended
	Mar. 31, 2019 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant, Balance	295,067
Shares available for grant, Granted	(925)
Shares available for grant, Exercised/issued
Shares available for grant, Cancelled/forfeited	32,644
Shares available for grant, Balance	326,786
Number of options outstanding, Balance	69,083
Number of options outstanding, Granted
Number of options outstanding, Exercised/issued
Number of options outstanding, Cancelled/forfeited	(32,644)
Number of options outstanding, Balance	36,439
Weighted-average option exercise price, Balance | $ / shares	$ 12.10
Weighted-average option exercise price, Granted | $ / shares
Weighted-average option exercise price, Exercised/issued | $ / shares
Weighted-average option exercise price, Cancelled/forfeited | $ / shares	12.95
Weighted-average option exercise price, Balance | $ / shares	$ 11.33
Number of restricted stock and board shares issued, Balance	99,570
Number of restricted stock and board shares issued, Granted
Number of restricted stock and board shares issued, Exercised/issued
Number of restricted stock and board shares issued, Cancelled/forfeited
Number of restricted stock and board shares issued, Balance	99,570
Number of RSUs outstanding, Balance	50,176
Number of RSUs outstanding, Granted	925
Number of RSUs outstanding, Exercised/issued	(1,000)
Number of RSUs outstanding, Cancelled/forfeited
Number of RSUs outstanding, Balance	50,101