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Treasury Stock (Tables) | 12 Months Ended
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Mar. 31, 2018
Equity [Abstract] |
Summary of Share Repurchases and Cumulatively Since Inception of Authorization | The share repurchases for the fiscal years ended March 31, 2018, 2017 and 2016 and cumulatively since inception of the authorization, are as follows:
|  | 2018 |  |  | 2017 |  |  | 2016 |  |  | Cumulative |
Shares repurchased |  |  | 249,245 |  |  |  | 745,575 |  |  |  | 893,771 |  |  |  | 34,881,079 |
Cost |  | $ | 11,187,000 |  |  | $ | 27,999,000 |  |  | $ | 31,525,000 |  |  | $ | 430,989,000 |
Average price |  | $ | 44.88 |  |  | $ | 37.56 |  |  | $ | 35.27 |  |  | $ | 12.36 |

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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