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Summary of Restricted Stock Award Activity (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 1 Months Ended
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Apr. 30, 2014 | Apr. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Payments of additional dividends | $ 1,341 us-gaap_PaymentsOfDividends |
Subsequent Event |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Payments of additional dividends |  | $ 396 us-gaap_PaymentsOfDividends / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Details
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- Details
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Balance Type: |
Period Type: |