Equity Method Investment - Roll forward of Carrying Value (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Carrying value of equity method investment
Beginning balance			$ 5,338	$ 11,414
Loss recognized in connection with equity method investment	$ (1,485)	$ (1,415)	(2,865)	(2,315)
Ending balance	$ 2,473	$ 9,099	$ 2,473	$ 9,099

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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