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Sale of Intellectual Property - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |  |
Revenue - other |  |  | $ 1,750
Intellectual property |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Proceeds from royalties | $ 600 |  |
Revenue - other |  | $ 600 |

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- Definition Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other. + 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(a),(d)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Cash received for royalties during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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