Revenue - Major Products (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Revenue from External Customer [Line Items]
Revenue, net	$ 54,777	$ 51,570	$ 59,007	$ 54,827	$ 59,368	$ 56,077	$ 61,242	$ 56,228	$ 220,181	$ 232,915	$ 225,958
Product concentration risk | Revenue benchmark
Revenue from External Customer [Line Items]
Concentration risk									100.00%	100.00%	100.00%
Protandim® product line
Revenue from External Customer [Line Items]
Revenue, net									$ 150,272	$ 156,335	$ 144,100
Protandim® product line | Product concentration risk | Revenue benchmark
Revenue from External Customer [Line Items]
Concentration risk									68.20%	67.10%	63.80%
TrueScience® product line
Revenue from External Customer [Line Items]
Revenue, net									$ 22,617	$ 23,739	$ 24,853
TrueScience® product line | Product concentration risk | Revenue benchmark
Revenue from External Customer [Line Items]
Concentration risk									10.30%	10.20%	11.00%
Other
Revenue from External Customer [Line Items]
Revenue, net									$ 47,292	$ 52,841	$ 57,005
Other | Product concentration risk | Revenue benchmark
Revenue from External Customer [Line Items]
Concentration risk									21.50%	22.70%	25.20%