Self-Tender Offer (Details) - USD ($)	Apr. 08, 2021	Mar. 08, 2021	Feb. 07, 2021
Self-Tender Stock Offering [Line Items]
Self-tender stock offering, authorized amount			$ 20,000,000
Self Tender Offer
Self-Tender Stock Offering [Line Items]
Self-tender stock offering, authorized amount		$ 25,000,000
Self-Tender stock offering, share purchase price (in dollars per share)	$ 74.00
Payments for Self-Tender stock offering, net	$ 25,300,000
Self-tender stock offering, number of shares repurchased (in shares)	337,837
Minimum | Self Tender Offer
Self-Tender Stock Offering [Line Items]
Self-Tender stock offering, share purchase price (in dollars per share)		$ 66.25
Maximum | Self Tender Offer
Self-Tender Stock Offering [Line Items]
Self-Tender stock offering, share purchase price (in dollars per share)		$ 76.00