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Concentrations - Additional Information (Detail) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 Customer Vendor Supplier | Jun. 30, 2016 Customer Supplier | Jun. 30, 2017 Customer Vendor Supplier | Jun. 30, 2016 Customer Supplier | Dec. 31, 2016 Customer Vendor
Accounts Receivable | Customer Concentration Risk |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of customers |  |  | 5 |  | 3
Accounts Receivable | Customer Concentration Risk | Four Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 91.00% |  |
Accounts Receivable | Customer Concentration Risk | Three Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 93.00%
Revenue | Customer Concentration Risk |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of customers | 4 | 4 | 4 | 3 |
Revenue | Customer Concentration Risk | Four Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage | 79.00% | 96.00% | 76.00% |  |
Revenue | Customer Concentration Risk | Three Customers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  |  | 88.00% |
Accounts Payables | Supplier Concentration Risk |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of vendors | Vendor | 5 |  | 5 |  | 1
Accounts Payables | Supplier Concentration Risk | Three Vendors |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  | 85.00% |  |
Accounts Payables | Supplier Concentration Risk | One Vendor |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 35.00%
Cost of Goods Sold | Supplier Concentration Risk |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Number of suppliers | Supplier | 2 | 1 | 2 | 2 |
Cost of Goods Sold | Supplier Concentration Risk | One Supplier |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage | 90.00% | 20.00% | 62.00% |  |
Cost of Goods Sold | Supplier Concentration Risk | Two Suppliers |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage |  |  |  | 39.00% |

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- Definition Number of major customers. + References No definition available. + Details
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- Definition Number of major suppliers. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 + Details
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