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Basis of Presentation and Significant Accounting Policies - Additional Information (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 USD ($) Customer | Jun. 30, 2016 Customer | Jun. 30, 2017 USD ($) Customer | Jun. 30, 2016 Customer | Dec. 31, 2016 Customer
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Loss allocated to participating securities | $ | $ 113,000 |  | $ 0 |  |
Contractual obligation | $ | $ 0 |  | $ 0 |  |
Customer Concentration Risk [Member] | Trade Receivables [Member] |  |  |  |  |
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Number of major customers | Customer |  |  | 1 |  | 1
Customer Concentration Risk [Member] | Trade Receivables [Member] | Customer 1 [Member] |  |  |  |  |
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk, percentage (in hundredths) |  |  | 95.00% |  | 85.00%
Customer Concentration Risk [Member] | Revenues [Member] |  |  |  |  |
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Number of major customers | Customer | 1 | 2 | 1 | 3 |
Customer Concentration Risk [Member] | Revenues [Member] | Customer 1 [Member] |  |  |  |  |
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk, percentage (in hundredths) | 92.00% | 56.00% | 90.00% | 34.00% |
Customer Concentration Risk [Member] | Revenues [Member] | Customer 2 [Member] |  |  |  |  |
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk, percentage (in hundredths) |  | 15.00% |  | 25.00% |
Customer Concentration Risk [Member] | Revenues [Member] | Customer 3 [Member] |  |  |  |  |
Basis Of Presentation And Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk, percentage (in hundredths) |  |  |  | 21.00% |

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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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