Note F - Economic Dependency (Tables)

9 Months Ended

Mar. 31, 2018

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 ,
	2018		2017		2018		2017
Supplier 1	$	2,076		1,317	$	5,068	(a)
Supplier 2	(a)			1,683	(a)		(a)
Supplier 3	(a)			1,646	(a)		(a)
	$	2,076	$	4,646	$	5,068		—

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 ,
	2018		2017		2018		2017
Customer 1	$	17,229	$	11,046	$	49,521	$	43,198
Customer 2		3,668	(a)			10,908	(a)
	$	20,897	$	11,046	$	60,429	$	43,198