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Nature of Operations and Summary of Significant Accounting Policies Treasury Stock (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Class of Stock Disclosures [Abstract]      
Treasury Stock, Common, Shares 29,793   29,793
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased 5,198   5,198
Treasury Stock, Value $ 1,613,202   $ 1,613,202
Treasury Stock, Shares, Acquired 0 400