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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Loss Contingencies [Line Items] |  |
Rent expense | $ 0.4 | $ 0.6
Minimum |  |
Loss Contingencies [Line Items] |  |
Lease interest rate | 6.60% |
Maximum |  |
Loss Contingencies [Line Items] |  |
Lease interest rate | 9.60% |

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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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