Note 8 - Employee Benefit Plans (Detail) - Stock Options Awarded Under the Company’s Stock Option Plans (USD $)	6 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Jun. 30, 2011	Dec. 31, 2011 Begining Balance [Member]	Jun. 30, 2011 Begining Balance [Member]	Jun. 30, 2010 Begining Balance [Member]	Dec. 31, 2012 Ending Balance [Member]	Dec. 31, 2011 Ending Balance [Member]	Jun. 30, 2011 Ending Balance [Member]
Outstanding at beginning of Period				42,000	63,100	168,350	20,000	42,000	63,100
Outstanding at beginning of Period (in Dollars per share)				$ 6.98	$ 6.35	$ 5.91	$ 9.30	$ 6.98	$ 6.35
Cancelled/Forfeited	(1,600)	22,000	(30,000)
Cancelled/Forfeited (in Dollars per share)	$ 5.95	$ 4.88	$ 4.75
Exercised	(19,500)		(75,250)
Exercised (in Dollars per share)	$ 5.02		$ 6.01
Outstanding at end of Period				42,000	63,100	168,350	20,000	42,000	63,100
Outstanding at end of Period (in Dollars per share)				$ 6.98	$ 6.35	$ 5.91	$ 9.30	$ 6.98	$ 6.35