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Stockholders' Equity and Restrictions Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net income (loss) $ 10,741 $ 2,698 $ 6,126 $ 4,872 $ 13,659 $ 3,407 $ 2,492 $ 6,449 $ 24,437 $ 26,007 $ 72,706
Weighted Average Number of Shares Outstanding, Basic                 49,696,000 50,139,000 49,972,000
Weighted Average Number of Shares Outstanding, Diluted                 50,681,000 50,867,000 50,645,000
Common Stock Class A [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net Income (Loss) Available to Common Stockholders, Basic                 $ 24,437 $ 26,007 $ 72,481
Weighted Average Number of Shares Outstanding, Basic                 49,696,000 50,139,000 49,664,000
Earnings Per Share, Basic $ 0.21 $ 0.06 $ 0.12 $ 0.10 $ 0.27 $ 0.07 $ 0.05 $ 0.13 $ 0.49 $ 0.52 $ 1.46
Net Income (Loss) Available to Common Stockholders, Diluted                 $ 24,437 $ 26,007 $ 72,484
Weighted Average Number of Shares Outstanding, Diluted                 50,681,000 50,867,000 50,337,000
Earnings Per Share, Diluted $ 0.21 $ 0.05 $ 0.12 $ 0.10 $ 0.27 $ 0.06 $ 0.05 $ 0.13 $ 0.48 $ 0.51 $ 1.44
Common Stock Class B [Member]                      
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                      
Net Income (Loss) Available to Common Stockholders, Basic                 $ 0 $ 0 $ 225
Weighted Average Number of Shares Outstanding, Basic                 0 0 308,000
Earnings Per Share, Basic                 $ 0 $ 0 $ 0.73
Net Income (Loss) Available to Common Stockholders, Diluted                 $ 0 $ 0 $ 222
Weighted Average Number of Shares Outstanding, Diluted                 0 0 308,000
Earnings Per Share, Diluted                 $ 0 $ 0 $ 0.72