Performance-Based Common Stock Warrants - Impact to Net Sales in Connection with Warrants and Related Income Tax Benefit (Details) - Common Stock Purchase Warrants - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Class of Warrant or Right [Line Items]
Reduction to net sales	$ 187	$ 711	$ 525	$ 1,381
Income tax benefit	$ 47	$ 177	$ 131	$ 345