Stock Compensation Plans, Employee Stock Purchase Plan (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jan. 27, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Member] | Dividend Declared in 2022 Annual [Member]
Employee Stock Purchase Plan [Abstract]
Stock dividend percentage	5.00%
Dividends, date declared	Jan. 27, 2022
Dividends, date to be paid	Mar. 25, 2022
Dividends, date of record	Feb. 28, 2022
2016 Amended Employee Stock Purchase Plan [Member]
Employee Stock Purchase Plan [Abstract]
Shares authorized for issuance under plan (in shares)		341,820
Purchase price of stock in percentage for participation		85.00%
Percentage of eligible employee participating in plan		40.00%
Cash contributions to ESPP		$ 97
Shares purchased for award (in shares)		13,272
Weighted average purchase price of shares purchased (in dollars per share)		$ 7.32
Compensation cost related to ESPP		$ 32	$ 19
2016 Amended Employee Stock Purchase Plan [Member] | Minimum [Member]
Employee Stock Purchase Plan [Abstract]
Eligibility employment period required for plan participation		90 days
2016 Amended Employee Stock Purchase Plan [Member] | Maximum [Member]
Employee Stock Purchase Plan [Abstract]
Plan participation period		27 months
Percentage of employee compensation that can be withheld to purchase common stock		10.00%