Selected Quarterly Data - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Income tax benefit			$ (11,355)	$ (33,495)	$ (147,180)
Goodwill impairment charge		$ 33,827	$ 0	$ 33,827	$ 0
Foreign
Operating Loss Carryforwards [Line Items]
Income tax benefit	$ 18,606