Restructuring - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Pre-tax charge		$ 1.5
Closure of Columbus, OH and Selkirk, NY Branches [Member]
Restructuring Cost And Reserve [Line Items]
Branch closures announcement description		During the second quarter of 2020, the Company announced the planned closure of its Columbus, OH and Selkirk, NY branches to improve operating results and gain operational efficiency through leverage of workforce, logistics and working capital.
Pre-tax charge	$ 1.5
Estimated impairment of inventory and inventory transfer costs	0.7
Facility exit costs	0.2
Employee retention and extension of benefits	0.1
Other branch closure costs	$ 0.5

Employee retention and extension of benefit costs.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Description of a specific restructuring plan and related activities including the facts and circumstances leading to the restructuring or decision to exit an activity, and the expected completion date. This concept and related items would be utilized for each plan if multiple exit plans have been implemented in the period.

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