Natural Health Trends Corp. Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Revenue (Details Textual) $ in Millions	3 Months Ended
Note 2 - Revenue (Details Textual) $ in Millions	Mar. 31, 2021 USD ($)	Mar. 31, 2020
Revenue from Contract with Customers, Sales Returns, Percent	1.00%	2.00%
Contract with Customer, Liability, Revenue Recognized	$ 1.1
Geographic Concentration Risk [Member] \| Revenue Benchmark [Member]
Number of Major Markets	0	0
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Number of Major Customers	0	0
Minimum [Member]
Revenue from Contract with Customer, Sales Returns Policy Term (Day)	14 days
Revenue from Contract with Customers, Historical Sales Returns, Percent	1.00%
Maximum [Member]
Revenue from Contract with Customer, Sales Returns Policy Term (Day)	1 year
Revenue from Contract with Customers, Historical Sales Returns, Percent	5.00%