Note 18 - Condensed Statements of Cash Flows (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Parent Company [Member]
Net income									$ 8,648,000	$ 9,055,000	$ 7,051,000
Deferred income taxes									122,000	49,000	(706,000)
Equity in undistributed earnings of subsidiaries									(1,608,000)	(4,943,000)	(7,898,000)
Net change in other liabilities									(22,000)	(3,000)	74,000
Net change in other assets									500,000	510,000	37,000
Other, net									73,000	64,000	(68,000)
Net cash provided by (used) for operating activities									7,713,000	4,732,000	(1,510,000)
Payments for investments in and (advances to) subsidiaries									69,000	(44,000)	3,745,000
Net cash provided by (used for) investing activities									69,000	(44,000)	3,745,000
Proceeds from issuance of common stock											156,000
Payments to repurchase common stock									(2,360,000)
Dividends paid									(4,603,000)	(4,393,000)	(4,179,000)
Net cash used for financing activities									(6,963,000)	(4,393,000)	(4,023,000)
NET CHANGE IN CASH AND CASH EQUIVALENTS									819,000	295,000	(1,788,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD				$ 3,091,000				$ 2,796,000	3,091,000	2,796,000	4,584,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 3,910,000				$ 3,091,000				3,910,000	3,091,000	2,796,000
Net income	3,755,000	$ 1,611,000	$ 1,558,000	1,724,000	1,360,000	$ 1,678,000	$ 3,557,000	2,459,000	8,648,000	9,055,000	7,051,000
Deferred income taxes									(5,621,000)	(3,959,000)	(3,189,000)
Other, net									(320,000)	37,000	673,000
Net cash provided by (used) for operating activities									9,685,000	5,169,000	6,466,000
Net cash provided by (used for) investing activities									(117,109,000)	(131,896,000)	(54,430,000)
Payments to repurchase common stock									2,360,000
Dividends paid									(4,603,000)	(4,393,000)	(4,179,000)
Net cash used for financing activities									152,278,000	146,845,000	12,617,000
NET CHANGE IN CASH AND CASH EQUIVALENTS									44,854,000	20,118,000	(35,347,000)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD				$ 60,240,000				$ 40,122,000	60,240,000	40,122,000	75,469,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 105,094,000				$ 60,240,000				$ 105,094,000	$ 60,240,000	$ 40,122,000