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Related Party Transactions (Related Party Revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015
Related party transactions: |  |  |  |
Management fees revenue | $ 9,734 | $ 8,170 | $ 23,050 | $ 20,601
Revenue from related parties | 10,960 | 9,415 | 26,731 | 25,460
Sac Holdings [Member] |  |  |  |
Related party transactions: |  |  |  |
Interest income revenue | 1,226 | 1,245 | 3,681 | 3,733
Management fees revenue | 4,687 | 4,461 | 14,995 | 14,158
Private Mini [Member] |  |  |  |
Related party transactions: |  |  |  |
Interest income revenue |  |  |  | 1,126
Management fees revenue | 875 | 849 | 2,707 | 2,473
Mercury [Member] |  |  |  |
Related party transactions: |  |  |  |
Management fees revenue | $ 4,172 | $ 2,860 | $ 5,348 | $ 3,970

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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 + Details
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