Note 9 - Investments in Marketable Securities (Tables)

3 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	December 31, 2016						September 30, 2016
	(Unaudited)
	Aggregate fair value		Amortized/Adjusted cost basis		Pretax unrealized gains		Aggregate fair value		Amortized/Adjusted cost basis		Pretax unrealized gains
Marketable securities
Common stocks	$	188,729,000	$	58,449,000	$	130,280,000	$	158,462,000	$	53,436,000	$	105,026,000
Bonds		7,757,000		4,942,000		2,815,000		8,172,000		4,942,000		3,230,000
Total	$	196,486,000	$	63,391,000	$	133,095,000	$	166,634,000	$	58,378,000	$	108,256,000