Long-Term Incentive Plan - Additional Information (Details) - USD ($)
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12 Months Ended |
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Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
| Absolute TSR Awards, Relative TSR Awards and Book Value Awards | Minimum |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Threshold percentage of performance goals |
50.00%
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| Absolute TSR Awards, Relative TSR Awards and Book Value Awards | Maximum |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Threshold percentage of performance goals |
250.00%
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| ROE Awards |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Vesting period |
1 year
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| Share-based compensation arrangement by share-based payment award, equity instruments other than options conversion in period |
82,124
|
76,152
|
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| Shares granted (in shares) |
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82,124
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| Grant date fair value per share |
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$ 5.65
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| Performance-based Stock Awards |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Allocated Share-based Compensation Expense (Income) |
$ 415,000
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$ 369,000
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| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total |
$ 878,000
|
665,000
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term |
2 years 2 months 26 days
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| Restricted Stock Units (RSUs) |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total |
$ 1,847,000
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$ 1,528,000
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term |
1 year 6 months
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|
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| Share-based compensation arrangement by share-based payment award, equity instruments other than options conversion in period |
82,124
|
76,152
|
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| Vesting rights, description |
The Company grants restricted common shares to employees that either vest either ratably over a three-year period or cliff vest at the end of a three-year period based on continued employment over these specified periods.
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| Allocated Share-based Compensation Expense |
$ 1,190,000
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$ 972,000
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested |
$ 828,000
|
$ 401,000
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |
759,035
|
547,688
|
311,962
|
| Shares granted (in shares) |
365,592
|
300,000
|
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| Grant date fair value per share |
$ 3.89
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$ 2.79
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| Undistributed Restricted Stock Issued To Trust |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |
9,155
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9,155
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| Restricted Stock Units (RSUs) |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Allocated Share-based Compensation Expense |
$ 400,000
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$ 399,000
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| Restricted Stock Units (RSUs) | Executive Chairman |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Shares granted (in shares) |
87,847
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| Grant date fair value per share |
$ 6.83
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| Restricted Stock Units (RSUs) | Employee |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Allocated Share-based Compensation Expense |
$ 78,000
|
$ 248,000
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance |
20,455
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| Restricted Stock Units (RSUs) | Non-employee Director |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Shares granted (in shares) |
98,035
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110,495
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| Grant date fair value per share |
$ 4.08
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$ 3.62
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance |
415,822
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| Common Class A | Absolute TSR Awards, Relative TSR Awards and Book Value Awards |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Vesting period |
3 years
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| Common Class A | Absolute TSR Awards, Relative TSR Awards and Book Value Awards | Minimum |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Vesting percentage |
0.00%
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| Common Class A | Absolute TSR Awards, Relative TSR Awards and Book Value Awards | Maximum |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Vesting percentage |
250.00%
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| Common Class A | Restricted Stock Units (RSUs) |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Intrinsic value |
$ 154,000
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$ 162,000
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| Common Class A | Restricted Stock Units (RSUs) | Non-employee Director |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Intrinsic value |
0
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$ 237,000
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| Long Term Incentive Plan 2021 | Stock Options and SARs |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value |
$ 160,000
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| Long Term Incentive Plan 2021 | Common Class A |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |
5,256,076
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| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
4,855,269
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| Long Term Incentive Plan 2021 and Prior Plans |
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| Share based Compensation Arrangement by Share based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
4,506,622
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| Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period |
348,647
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