Prior Periods Financial Statement Revision - Schedule of Corrections of Misstatements and Revision on Consolidated Statements of Changes in Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Additional paid-in capital	$ 498,294		$ 498,294			$ 501,615
Net loss	(21,748)	$ (7,283)	(269,939)	$ (26,801)
Accumulated deficit	(375,222)		(375,222)			(105,283)
Foreign currency translation gain (loss)		(1,497)		(176)
Accumulated other comprehensive loss	(66,676)		(66,676)			(44,554)
Total stockholders' equity	$ 57,899	377,329	$ 57,899	377,329	$ 78,902	$ 353,277	$ 394,957	$ 419,271
Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Additional paid-in capital		513,380		513,380
Net loss		(6,697)		(25,297)
Accumulated deficit		(93,328)		(93,328)
Foreign currency translation gain (loss)		(1,434)		(172)
Accumulated other comprehensive loss		(42,615)		(42,615)
Total stockholders' equity		377,861		377,861
Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Additional paid-in capital		(8,824)		(8,824)
Net loss		(586)		(1,504)
Accumulated deficit		7,985		7,985
Foreign currency translation gain (loss)		(63)		(4)
Accumulated other comprehensive loss		307		307
Total stockholders' equity		(532)		(532)
Continuing Operations As Revised
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Additional paid-in capital		504,556		504,556
Net loss		(7,283)		(26,801)
Accumulated deficit		(85,343)		(85,343)
Foreign currency translation gain (loss)		(1,497)		(176)
Accumulated other comprehensive loss		(42,308)		(42,308)
Total stockholders' equity		$ 377,329		$ 377,329