Revenue from Contracts with Customers (ASC 606) - Schedule of Error Correction (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statements of Operations
Product sales		$ 13,215
Cost of goods and services sold		8,284
Net loss	$ (6,214)	(6,254)
Previously Reported
Statements of Operations
Product sales		12,874
Cost of goods and services sold		7,853
Net loss		$ (6,179)