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Basis of Presentation - Additional Information (Detail) | Mar. 31, 2015
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Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Percentage of outstanding common stock of investees accounted for using equity method of accounting | 20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Percentage of outstanding common stock of investees accounted for using equity method of accounting | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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