Stock Incentive Plans (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding, Balance	22,839
Stock incentive and equity plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant, Balance	295,067	274,494
Shares available for grant, Granted	(60,925)	(47,953)
Shares available for grant, Exercised/issued
Shares available for grant, Canceled/forfeited	47,244	68,526
Shares available for grant, Balance	281,386	295,067
Number of options outstanding, Balance	69,083	125,564
Number of options outstanding, Granted	1,000	10,000
Number of options outstanding, Exercised/issued		(938)
Number of options outstanding, Canceled/forfeited	(47,244)	(65,543)
Number of options outstanding, Balance	22,839	69,083
Weighted-average option exercise price, Balance	$ 12.10	$ 19.53
Weighted-average option exercise price, Granted
Weighted-average option exercise price, Exercised/issued		6.10
Weighted-average option exercise price, Cancelled/forfeited	11.35	31.66
Weighted-average option exercise price, Balance	$ 13.48	$ 12.10
Number of restricted stock shares issued, Balance	99,570	97,692
Number of restricted stock shares issued, Granted		1,878
Number of restricted stock shares issued, Exercised/issued
Number of restricted stock shares issued, Canceled/forfeited
Number of restricted stock shares issued, Balance	99,570	99,570
Number of RSUs outstanding, Balance	50,176	22,384
Number of RSUs outstanding, Granted	925	36,075
Number of RSUs outstanding, Exercised/issued	(6,098)	(5,300)
Number of RSUs outstanding, Canceled/forfeited		(2,983)
Number of RSUs outstanding, Balance	45,003	50,176