Note G - Economic Dependency (Tables)

9 Months Ended

Mar. 31, 2020

Supplier Concentration Risk [Member]

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended March 31,				Nine Months Ended March 31,
	20 20		2019		2020		2019
Supplier 1	$	1,930	(a)		(a)		(a)
Supplier 2	(a)		(a)		(a)			6,312
	$	1,930		—	$	—		6,312

Customer Concentration Risk [Member]

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended March 31,				Nine Months Ended March 31,
	20 20		2019		2020		2019
Customer 1	$	9,271	$	18,731	$	36,047	$	58,396
Customer 2		7,599		7,294		17,108		17,220
	$	16,870	$	26,025	$	53,155	$	75,616