CAPITAL STOCK - Shares authorized, issued, and outstanding (Parentheticals) (Details)	12 Months Ended
Jun. 30, 2016 $ / shares
6% Prior Cumulative Preferred, $5 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 5
Stated percentage of preferred stock	6.00%
5% Convertible Cumulative Preferred, $20 par value
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 20
Stated percentage of preferred stock	5.00%

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant