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Stock Compensation Plans - Performance-Based Restricted Stock Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation			$ 4,354	$ 4,740	$ 3,368
Compensation expense
Total Compensation			5,202	$ 6,002	5,323
Unamortized future compensation expense	$ 4,400		4,400
Summary of restricted stock activity
Shares forfeited	(9,000)
Weighted average grant date fair value
Shares forfeited (per share)	$ 14.91
Restricted Stock, subject to performance criteria
Compensation expense
Unamortized future compensation expense	$ 600		$ 600
Summary of restricted stock activity
Nonvested, January 1, 2021			459,000
Shares vested			(93,000)
Shares awarded			144,000
Shares forfeited			(389,000)
Nonvested, December 31, 2021	121,000	459,000	121,000	459,000
Weighted average remaining term (years)
Outstanding (years)			3 years 3 months 14 days	9 months 29 days
Weighted average grant date fair value
Nonvested, January 1, 2021			$ 15.29
Shares vested (per share)			15.16
Shares awarded (per share)			24.92
Shares forfeited (per share)			17.09
Nonvested, December 31, 2021	$ 17.30	$ 15.29	$ 17.30	$ 15.29
Restricted Stock, subject to performance criteria | Three Year Performance Targets Based Shares [Member]
Plan information
Performance period			3 years
Summary of restricted stock activity
Shares awarded			0
Performance-based restricted stock, earned
Compensation expense
Total Compensation			$ 300	$ 1,100	1,800
Tax benefit related to compensation expense		$ 200	$ 100		$ 200
Performance-based restricted stock, earned | Three Year Performance Targets Based Shares [Member]
Plan information
Performance period			3 years
Vesting period (in years)			3 years
Represents information relating to market based restricted stock units.
Compensation expense
Total Compensation			$ 100	400
Tax benefit related to compensation expense			$ 0	$ 100
Summary of restricted stock activity
Nonvested, January 1, 2021			52,000
Shares awarded			291,000
Shares forfeited			(60,000)
Nonvested, December 31, 2021	283,000	52,000	283,000	52,000
Weighted average remaining term (years)
Outstanding (years)			3 years 5 months 4 days	2 years
Weighted average grant date fair value
Nonvested, January 1, 2021			$ 28.44
Shares awarded (per share)			20.09
Shares forfeited (per share)			32.17
Nonvested, December 31, 2021	$ 19.06	$ 28.44	$ 19.06	$ 28.44
Represents information relating to market based restricted stock units. | Three Year Performance Targets Based Shares [Member]
Plan information
Performance period			3 years
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