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Share-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 10, 2010 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 19, 2021 | Jun. 18, 2013 | Jan. 21, 2003
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Total assets |  | $ 7,374,903 | $ 5,886,614 |  |  |  |
Total compensation cost |  | 68 | 132 | $ 215 |  |  |
Tax benefit associated with compensation expense |  | 14 | 28 | 45 |  |  |
Total compensation cost |  | 1,800 | 1,300 | 920 |  |  |
Cash received from option exercise |  | 1,100 | 255 | 236 |  |  |
Actual tax benefit realized for the tax deductions |  | 334 | 59 | 104 |  |  |
Unrecognized compensation cost |  | $ 3,200 |  |  |  |  |
Weighted-average period cost over which cost is expected to be recognized |  | 2 years 4 months 28 days |  |  |  |  |
Performance Based Share Awards | Minimum |  |  |  |  |  |  |
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Total assets |  | $ 1,000,000 |  |  | $ 3,000,000 |  |
Performance Based Share Awards | Maximum |  |  |  |  |  |  |
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Total assets |  | 5,000,000 |  |  | $ 7,000,000 |  |
Restricted and Performance Shares |  |  |  |  |  |  |
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Total compensation cost |  | 68 | 132 |  |  |  |
Tax benefit associated with compensation expense |  | 368 | 253 | 148 |  |  |
Total compensation cost |  | $ 1,800 | $ 1,200 | $ 705 |  |  |
Option Activity Under the 2003 Plan |  |  |  |  |  |  |
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Number of shares available incentive stock options |  |  |  |  |  |  | 759,375
Non-option awards granted (in shares) |  |  |  |  |  |  | 379,687
Additional common shares available for issuance (in shares) | 885,937 |  |  |  |  |  |
Maximum common issued under the plan (in shares) |  |  |  |  |  |  | 759,375
Option Activity Under the 2013 Plan |  |  |  |  |  |  |
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Number of shares available incentive stock options |  |  |  |  |  | 225,000 |
Non-option awards granted (in shares) |  |  |  |  |  | 900,000 |
Weighted average grant-date fair value of options granted |  | $ 0.00 | $ 0.00 | $ 4.44 |  |  |
Maximum common issued under the plan (in shares) |  |  |  |  |  | 1,556,325 |
Option Activity Under the 2021 Plan |  |  |  |  |  |  |
Stock Based Compensation [Line Items] |  |  |  |  |  |  |
Maximum common issued under the plan (in shares) |  |  |  |  | 1,787,548 |  |

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