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New Accounting Standards (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Mar. 31, 2019
Rent expense for all operating leases | $ 8,348 |
Future minimum rental payments required under operating leases | $ 26,020 |
ASU 2016-16 [Member] |  |
Cumulative effect from adoption |  | $ (1,005)
Retained Earnings [Member] | ASU 2016-16 [Member] |  |
Cumulative effect from adoption |  | $ (1,005)

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