Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Schedule of Effects of Adopting ASC 606 on Unaudited Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue – related party	$ 39,212		$ 37,842
Deferred revenue, net of current portion – related party	81,831		125,798
Accumulated deficit	(849,430)	$ (758,605)	(798,061)
Before ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue – related party	35,396
Deferred revenue, net of current portion – related party	122,060
Accumulated deficit	(885,843)		$ (798,061)
Accounting Standards Update 2014-09 \| ASC 606 Adjustments
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue – related party	3,816
Deferred revenue, net of current portion – related party	(40,229)
Accumulated deficit	$ 36,413	$ 39,456

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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