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Treasury Stock - Additional Information (Details) - USD ($) $ in Millions				1 Months Ended	19 Months Ended
	Sep. 09, 2020	Sep. 09, 2019	Aug. 07, 2018	Aug. 31, 2017	Mar. 31, 2021
Equity Class Of Treasury Stock [Line Items]
Stock repurchase, shares					162,000
Common stock repurchase, value					$ 1.6
Common Stock | Share Repurchase Program August 2017
Equity Class Of Treasury Stock [Line Items]
Stock approved for repurchase, value				$ 7.0
Period of stock repurchase program				12 months
Additional period of stock repurchase program			12 months
Common Stock | Share Repurchase Program September 9, 2019
Equity Class Of Treasury Stock [Line Items]
Stock approved for repurchase, value		$ 7.0
Period of stock repurchase program		12 months
Additional period of stock repurchase program	12 months

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Amount of stock repurchase plan authorized.

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