Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Decrease in the net deferred tax asset	$ (2,363)
Unrecognized tax benefits	0	$ 0	$ 0
Foreign
Income Taxes [Line Items]
Operating loss carryforwards	50,184
Deferred tax assets for foreign operating loss carryforwards	12,275
Operating loss carryforwards with indefinite life	42,632
Deferred tax assets for operating loss carryforwards for indefinite life	10,318
Operating loss carryforwards which expire between 2022 and 2028	7,552
Deferred tax assets for operating loss carryforwards which expire between 2022 and 2028	$ 1,957