Stock Incentive Plans - 2016 Equity Compensation Plan Stock Options Activity (Details) - Employee Stock Option - 2016 Equity Compensation Plan - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Options
Balance outstanding beginning of period, options (in shares)	13,000	26,000
Options vested but not exercised (in shares)	(13,000)	(13,000)
Balance outstanding end of period, options (in shares)	0	13,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, weighted-average exercise price (in dollars per share)	$ 38.92	$ 38.92
Vested and unexercised (in dollars per share)	38.92	38.92
Ending balance, weighted-average exercise price (in dollars per share)		38.92
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance, fair value of options on grant date (in dollars per share)	9.10	18.20
Vested and unexercised, fair value (in dollars per share)	(9.10)	(9.10)
Forfeitures, fair value of options on grant date (in dollars per share)	$ 0
Ending balance, fair value of options on grant date (in dollars per share)		$ 9.10
Share Based Compensation Arrangement By Share Based Payment Award, Option, Aggregate Fair Value [Roll Forward]
Balance outstanding beginning of period, aggregate fair value	$ 230	$ 470
Vested and unexercised, aggregate fair value	(230)	(240)
Forfeited, aggregate fair value	$ 0
Balance outstanding end of period, aggregate fair value		$ 230