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Share Repurchase Programs (Detail) - USD ($) | 3 Months Ended | 50 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Aug. 31, 2014
Equity Class Of Treasury Stock [Line Items] |  |  |
Stock repurchase program, authorized amount |  |  | $ 50,000,000
Purchase of common stock, shares |  | 1,316,587 |
Purchase of Treasury Stock |  | $ 19,000,000 |
Program |  |  |
Equity Class Of Treasury Stock [Line Items] |  |  |
Purchase of common stock, shares | 0 |  |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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