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Accounts Receivable and Credit Losses (Classification of Accounts Receivable) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2019
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Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] |  |  |  |  |  |
Trade receivables, current - Gross | $ 87,537 |  |  |  |  |
Trade receivables, current - Allowance | (12,220) |  |  |  |  |
Trade receivables, current - Net | 75,317 |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss, Current [Abstract] |  |  |  |  |  |
Financing receivables, current - Gross | 5,019 |  |  |  |  |
Financing receivables, current - Allowance | (2,777) |  |  |  |  |
Financing receivables, current - Net | 2,242 |  |  |  |  |
Accounts Receivable, after Allowance for Credit Loss [Abstract] |  |  |  |  |  |
Accounts receivable, current - Gross | 92,556 |  |  |  |  |
Accounts receivable, current - Allowance | (14,997) |  |  |  |  |
Accounts receivable, current - Net | 77,559 |  | $ 87,042 | $ 98,732 |  |
Financing Receivable, after Allowance for Credit Loss, Noncurrent [Abstract] |  |  |  |  |  |
Financing receivables, noncurrent - Gross | 40,728 |  |  |  |  |
Financing receivables, noncurrent - Allowance | (13,540) |  |  |  |  |
Financing receivables, noncurrent - Net | 27,188 |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss [Abstract] |  |  |  |  |  |
Total | 45,747 |  | 50,025 | 50,296 |  |
Total Financing receivables - Allowance | (16,317) | $ (17,355) | $ (15,690) | $ (14,691) | $ (13,873) | $ (6,289)
Total Financing receivables - Net | $ 29,430 |  |  |  |  |

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