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Goodwill - Narrative (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Mar. 31, 2022
Nov. 01, 2021
Sep. 30, 2021
Dec. 31, 1998
Finite-Lived Intangible Assets [Line Items]          
Goodwill $ 16,859 $ 8,222   $ 8,222  
Motorcycle And Marine Education Business          
Finite-Lived Intangible Assets [Line Items]          
Goodwill         $ 8,200
MIAT College of Technology          
Finite-Lived Intangible Assets [Line Items]          
Goodwill     $ 8,637