Note F - Debt Facilities (Details) - Revolving Credit Facilities (USD $) In Thousands, unless otherwise specified	1 Months Ended	9 Months Ended
	Jun. 24, 2013	Jan. 31, 2014	Apr. 30, 2013	Sep. 20, 2012	Mar. 09, 2012
Revolving Credit Facilities [Abstract]
Revolving credit facilities		$ 145,000		$ 145,000	$ 125,000
Revolving credit facilities		LIBOR + 2.25%
Revolving credit facilities	Jun. 30, 2016	Jun. 30, 2016
Revolving credit facilities		$ 114,339	$ 99,563