Consolidated Statements of Stockholders' Equity (Parentheticals) - $ / shares		1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 19, 2014	Nov. 30, 2014	Dec. 31, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Cash dividends declared per share (in dollars per share)				$ 2.08	$ 18.5	$ 1.8
Special Cash Dividend
Cash dividends declared per share (in dollars per share)	$ 16.50	$ 16.50	$ 16.50