Note A - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($)				3 Months Ended			6 Months Ended
	Mar. 31, 2019	Sep. 30, 2017	Aug. 07, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 28, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Sales Discounts, Noncash								$ 490,000
Sales, Royalty and Licensing Revenue				$ 4,300,000	$ 4,400,000		7,500,000	9,800,000
Royalty Expense				192,000	178,000		359,000	441,000
Investment Income, Interest				$ 50,000	$ 529,000		$ 129,000	$ 1,084,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				0	0		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period				0	0		0	5,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period				0	0		0	0
Share-based Payment Arrangement, Expense				$ 459,000	$ 400,000		$ 892,000	$ 809,000
Foreign Currency Contract, Asset, Fair Value Disclosure				1,600,000			1,600,000		$ 2,300,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Net Asset (Liability), Total				0			0		0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Net Asset (Liability), Total				0			0		$ 0
Juice Plus + [Member]
Agreement, Term			5 years
Sales Discounts, Cash				395,000			790,000
Kaged Muscle LLC [Member] | Notes Receivable [Member]
Notes, Loans and Financing Receivable, Term		1 year
Financing Receivable, after Allowance for Credit Loss, Current, Total		$ 1,500,000
Notes, Loans and Financing Receivable, Extension Fee						$ 25,000
Notes, Loans and Financing Receivable, Interest Rate, Stated Percentage		15.00%
Investment Income, Interest				$ 0	$ 46,000		$ 0	$ 104,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				5,000	0		5,000	15,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period				0	5,000		15,000	5,000
Restricted Stock [Member] | Juice Plus, Amended and Restated Exclusive Manufacturing Agreement [Member]
Treasury Stock, Shares, Acquired	400,000
Restricted Stock [Member] | Juice Plus + [Member]
Stock Issuance Agreement, Shares Agreed to Grant			500,000
Sales Discounts, Noncash					$ 245,000			$ 490,000