Stock Repurchase (Details) - shares |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2017 |
Mar. 31, 2017 |
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| Equity [Abstract] | |||
| Stock repurchase program, number of shares authorized to be repurchased | 15,000,000.0 | 15,000,000.0 | |
| Repurchase of common stock (in shares) | 0 | 0 | |
| Treasury stock, number of shares held | 19,303,793 | 19,303,793 | 20,370,075 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. No definition available.
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| X | ||||||||||
- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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