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Self-Tender Offer (Details) - USD ($) | Apr. 08, 2021 | Mar. 08, 2021 | Feb. 07, 2021
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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 |

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