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Employee Benefit Plans (Pension Benefit Plan) - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items] |  |
Accumulated benefit obligation | $ 44.2 | $ 50.9
Bond Funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of current target allocation ranges by asset class | 50.00% |
Equity Funds [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of current target allocation ranges by asset class | 40.00% |
Cash, Real Estate, and Managed Futures [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of current target allocation ranges by asset class | 10.00% |
Minimum [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Threshold for unamortized gain losses | 10.00% |

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- Definition Threshold for Recognizing Actuarial Gains Losses in Accumulated Other Comprehensive Income + References No definition available. + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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