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v3.23.2

Subsequent events (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 6 Months Ended |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 28, 2023 | Jul. 06, 2023 | Jun. 30, 2023 | Jun. 30, 2022 | May 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Dec. 13, 2022 | Jul. 29, 2022 | May 24, 2022 | Mar. 31, 2022 | Feb. 28, 2022 | Dec. 31, 2021 | May 15, 2020
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for repurchase of common stock |  |  | $ 7,285 | $ 46,375 |  |  |  |  |  |  |  |  |  |
Class A Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, outstanding (in shares) |  |  | 10,884,575 | 11,270,944 |  | 10,975,723 | 10,868,556 | 10,867,660 | 11,251,930 | 11,863,559 | 12,156,174 | 12,322,073 | 12,447,036 | 12,636,523
Class A Stock | Modified Dutch Auction Tender Offer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized amount |  |  |  |  | $ 30,000 |  |  |  |  |  |  |  |  |
Class A Stock | Minimum | Modified Dutch Auction Tender Offer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, price (in dollars per share) |  |  |  |  | $ 34.00 |  |  |  |  |  |  |  |  |
Class A Stock | Maximum | Modified Dutch Auction Tender Offer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, price (in dollars per share) |  |  |  |  | $ 40.00 |  |  |  |  |  |  |  |  |
Class A Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly dividend payable amount per share (in dollars per share) | $ 0.15 |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, outstanding (in shares) |  | 10,447,392 |  |  |  |  |  |  |  |  |  |  |  |
Class A Stock | Subsequent Event | Modified Dutch Auction Tender Offer |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchase program, price (in dollars per share) |  | $ 40.00 |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased and cancellation (in shares) |  | 437,183 |  |  |  |  |  |  |  |  |  |  |  |
Payments for repurchase of common stock |  | $ 17,490 |  |  |  |  |  |  |  |  |  |  |  |
Class B Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, outstanding (in shares) |  |  | 99,665 |  |  |  | 99,665 |  |  |  |  |  |  |
Class B Stock | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Events [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Quarterly dividend payable amount per share (in dollars per share) | $ 0.15 |  |  |  |  |  |  |  |  |  |  |  |  |

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