USANA Health Sciences, Inc. Quarterly report pursuant to Section 13 or 15(d)

Note B - Fair Value Measures - Schedule Of Assets And Liabilities Measured At Fair Value (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Jul. 03, 2021	Jan. 02, 2021
Foreign currency contracts included in other current liabilities	$ (12)	$ (1,470)
Fair Value, Net Asset (Liability), Total	177,277	222,622
Fair Value, Inputs, Level 1 [Member]
Foreign currency contracts included in other current liabilities	0	0
Fair Value, Net Asset (Liability), Total	177,289	224,092
Fair Value, Inputs, Level 2 [Member]
Foreign currency contracts included in other current liabilities	(12)	(1,470)
Fair Value, Net Asset (Liability), Total	(12)	(1,470)
Fair Value, Inputs, Level 3 [Member]
Foreign currency contracts included in other current liabilities	0	0
Fair Value, Net Asset (Liability), Total	0	0
Money Market Funds [Member]
Money market funds included in cash equivalents	177,289	224,092
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Money market funds included in cash equivalents	177,289	224,092
Money Market Funds [Member] \| Fair Value, Inputs, Level 2 [Member]
Money market funds included in cash equivalents	0	0
Money Market Funds [Member] \| Fair Value, Inputs, Level 3 [Member]
Money market funds included in cash equivalents	$ 0	$ 0