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Share Repurchase Program - Additional Information (Detail) - USD ($) |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 08, 2022 | Nov. 05, 2018 | Sep. 30, 2021 | Aug. 31, 2021 | Jan. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2019 | Aug. 30, 2021 | Dec. 31, 2020
Equity Class Of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  |  |  |  |  | 300,000 |
Common stock, par value per share | $ 0.10 | $ 0.10 |  |  |  | $ 10 |  | $ 0.10 | $ 10
Number of shares purchased |  |  |  |  |  | 300,000 |  |  |
Amount paid for common shares purchase |  |  |  |  |  | $ 4,579,000 | $ 2,604,000 |  |
Average price paid per share |  |  |  |  |  | $ 15.26 |  |  |
Common stock, par value | $ 0.10 | $ 0.10 |  |  |  | $ 10 |  | $ 0.10 | $ 10
Common Stock |  |  |  |  |  |  |  |  |
Equity Class Of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of shares purchased | 1,000,000,000,000 |  | 221,700 | 78,300 | 158,048 | 300,000 | 158,048 |  |
Average price paid per share | $ 20 |  | $ 15.23 | $ 15.37 | $ 16.48 | $ 15.26 | $ 16.48 |  |
Number of shares intended to repurchase under repurchase program |  |  | $ 3,376,000 | $ 1,203,000 | $ 2,604,000 | $ 4,579,000 | $ 2,604,000 |  |
Shares repurchase program, expiration date |  | Mar. 08, 2019 |  |  |  |  |  |  |
Common Stock | Maximum |  |  |  |  |  |  |  |  |
Equity Class Of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of shares intended to repurchase under repurchase program |  | $ 20,000 |  |  |  |  |  |  |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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