Stock Compensation Plans, Information on Stock Options (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock options, additional disclosures [Abstract]
Stock options outstanding and expected to vest, number of shares (in shares)	425,394
Stock options outstanding and expected to vest, weighted average exercise price (in dollars per share)	$ 8.30
Stock options outstanding and expected to vest, aggregate intrinsic value	$ 1,193
Stock options outstanding and expected to vest, weighted average remaining contractual term	6 years 4 months 24 days
Stock options vested and currently exercisable, number of shares) (in shares)	235,825
Stock options vested and currently exercisable, weighted average exercise price (in dollars per share)	$ 6.62
Stock options vested and currently exercisable, aggregate intrinsic value	$ 1,039
Stock options vested and currently exercisable, weighted average remaining contractual term	5 years
Weighted average fair value per share of options granted (in dollars per share)	$ 1.73	$ 2.25	$ 2.42
Options exercised, aggregate intrinsic value	$ 0	$ 81	$ 0
Fair value of awards vested	$ 141	114	85
Exercise price range, lower range limit (in dollars per share)	$ 3.11
Exercise price range, upper range limit (in dollars per share)	$ 11.82
Unrecognized compensation related to non-vested stock options	$ 250
Unrecognized compensation cost, period for recognition	2 years 2 months 12 days
Recognized compensation cost	$ 150	$ 140	$ 111