Note F - Economic Dependency (Tables)

6 Months Ended

Dec. 31, 2018

Supplier Concentration Risk [Member]

Notes Tables

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

	Three Months Ended December 31,				Six Months Ended December 31,
	2018		2017		2018		2017
Supplier 1	$	1,866		(a)	$	(a)		2,992
Supplier 2		(a)		1,684		(a)		2,911
Supplier 3		(a)		1,718		4,472		(a)
	$	1,866		3,402	$	4,472		5,903

Customer Concentration Risk [Member]

Notes Tables

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

	Three Months Ended December 31,				Six Months Ended December 31,
	2018		2017		2018		2017
Customer 1	$	17,750	$	19,134	$	38,827	$	32,292
Customer 2		6,196		4,079		9,926		7,239
Customer 3		3,890	(a)		(a)		(a)
	$	27,836	$	23,213	$	48,753	$	39,531