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Description of the Company and Basis of Presentation - Revised Consolidated Statements of Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Revision of Previously Issued Financial Statements
Net income (loss)	$ (2,025)	$ 4	$ (2,511)	$ (6,056)	$ (2,021)	$ (8,567)
Other comprehensive loss
Comprehensive loss	$ (1,585)		(3,821)		$ (5,865)	(9,023)
As Previously Reported
Revision of Previously Issued Financial Statements
Net income (loss)		98	(2,461)	(5,671)		(8,133)
Other comprehensive loss
Comprehensive loss			(3,771)			(8,589)
Adjustment
Revision of Previously Issued Financial Statements
Net income (loss)		$ (94)	(50)	$ (385)		(434)
Other comprehensive loss
Comprehensive loss			$ (50)			$ (434)

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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