Investment in Silver Creek	12 Months Ended
Dec. 31, 2020
Noncontrolling Interest [Abstract]
Investment in Silver Creek	3. Investment in Silver Creek As of May 7, 2019, the carrying value of the Company’s investment in Silver Creek was $6.4 million. During the year ended December 31, 2019, the Company recorded a loss associated with Silver Creek of $1.0 million as a component of other (expense) income, net in the consolidated statements of operations and comprehensive loss, representing its proportionate share of Silver Creek’s losses during the period from January 1, 2019 to May 7, 2019. On May 7, 2019, the Company sold its entire equity position in Silver Creek for $7.8 million. Accordingly, a $1.4 million on gain on sale of its equity investment was recognized during the year ended December 31, 2019 within other (expense) income, net in the consolidated statement of operations and comprehensive loss.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-URI http://asc.fasb.org/topic&trid=2197479

Name:	us-gaap_MinorityInterestDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration