Revenue Data by Customer Type (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020 USD ($) distributionChannel	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) distributionChannel	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Revenue, Major Customer [Line Items]
Number of primary distribution channels | distributionChannel	2								2
Net sales	$ 68,548	$ 64,303	$ 53,647	$ 61,736	$ 76,400	$ 88,863	$ 67,437	$ 66,555	$ 248,234	$ 299,255	$ 359,111
Sales Channel, Directly to Consumer
Revenue, Major Customer [Line Items]
Net sales									240,690	288,800	343,464
Sales Channel, Through Intermediary
Revenue, Major Customer [Line Items]
Net sales									$ 7,544	$ 10,455	$ 15,647