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Related Party Transactions - Summary of Private Placement Participation (Detail) - Private Placement $ in Thousands | 1 Months Ended
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Dec. 31, 2017 USD ($) shares
Related Party Transaction [Line Items] |
Units Purchased | shares | 372,956
Subscription Amount | $ | $ 3,655
A&B (HK) Company Ltd. |
Related Party Transaction [Line Items] |
Units Purchased | shares | 204,081
Subscription Amount | $ | $ 2,000
Director 1 |
Related Party Transaction [Line Items] |
Units Purchased | shares | 76,530
Subscription Amount | $ | $ 750
Director 2 |
Related Party Transaction [Line Items] |
Units Purchased | shares | 51,019
Subscription Amount | $ | $ 500
CEO |
Related Party Transaction [Line Items] |
Units Purchased | shares | 25,510
Subscription Amount | $ | $ 250
CFO/CEO |
Related Party Transaction [Line Items] |
Units Purchased | shares | 15,816
Subscription Amount | $ | $ 155

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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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