Performance-Based Common Stock Warrants - Impact to Net Sales in Connection with Warrants and Related Income Tax Benefit (Details) - Performance-based warrants - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class of Warrant or Right [Line Items]
Reduction to net sales	$ 1,997	$ 163	$ 683
Income tax benefit	$ 498	$ 41	$ 255