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Commitments and Contingencies - Additional Information (Detail) € in Millions |  | 12 Months Ended | 24 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2014 EUR (€) | Dec. 31, 2016 USD ($) | Dec. 31, 2016 EUR (€) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Oct. 01, 2018 USD ($) | Jul. 01, 2013 USD ($)
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Operating lease rent expenses |  | $ 373,000 |  | $ 426,000 | $ 737,000 |  |
Purchase commitment amount under Insulin Supply Agreement | € |  |  | € 93.0 |  |  |  |
Supply Agreement expiration period |  | Dec. 31, 2023 | Dec. 31, 2023 |  |  |  |
Supply Agreement renewal period |  | 2 years | 2 years |  |  |  |
Purchase commitment obligation |  | $ 116,200,000 |  |  |  |  |
Before Amendment |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Purchase commitment amount under Insulin Supply Agreement | € | € 120.1 |  |  |  |  |  |
Scenario Forecast |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Purchase commitment cancellation fees |  |  |  |  |  | $ 3,400,000 |
Scenario Forecast | Before Amendment |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Purchase commitment cancellation fees |  |  |  |  |  | $ 5,300,000 |
Supply Commitment |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Purchase commitment obligation |  | $ 900,000 |  |  |  |  |
Deerfield | Milestone Rights Liability | Maximum |  |  |  |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |  |  |  |
Contingent liability for milestone payments |  |  |  |  |  |  | $ 90,000,000

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- Definition Long-term purchase commitment, renewal time period. + References No definition available. + Details
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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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