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Employee Benefit Plans - Stock Options and Restricted Stock (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock incentive plans
Tax benefits for compensation expense for restricted stock awards		$ 0
Stock Options
Stock incentive plans
Minimum ownership considered major owner	10.00%
Percentage of fair market value of the common stock for major owners	110.00%
Vesting period	5 years
Expiration period of the stock	10 years
Expiration period of the stock of majority owners	5 years
Options exercised	0	0	0
Options outstanding	0	0
Restricted Shares
Stock incentive plans
Stock based compensation award, vesting percentage	20.00%
Weighted average grant date fair value (in dollars per share)	$ 3.87	$ 4.59	$ 11.39
Total fair value of shares vested	$ 1,757,000	$ 3,474,000	$ 7,026,000
Tax benefits for compensation expense for restricted stock awards	1,164,000
Unrecognized compensation cost related to non-vested restricted shares	$ 38,227,000
Period for recognition of compensation cost related to non-vested restricted shares	3 years 10 months 24 days

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