Note 5 - Earnings (Loss) Per Share - Computations of Basic and Diluted Loss Per Common Share (Details) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Continuing Operations [Member]
Numerator for basic and diluted earnings per share:
Net income from continuing operations available to common stockholders	$ 3,470,000	$ 9,955,000
Net income from continuing operations	3,565,000	10,064,000
Payment of preferred stock dividends	(95,000)	(109,000)
Net income from continuing operations available to common stockholders	1,946,000	8,485,000
Loss from discontinued operations, net of tax	(452,000)	(1,007,000)
Loss on sale of discontinued operations, net of tax	$ (1,072,000)	$ (463,000)
Weighted average shares used in computation - basic (in shares)	38,328,115	54,210,555
Assumed conversion of preferred stock (in shares)	1,658,537	2,095,784
Effect of outstanding stock options (in shares)	582,688	732,722
Weighted average shares used in computation - diluted (in shares)	40,569,340	57,039,061
Earnings (loss) per common share attributable to common shareholders – basic:
Income from continuing operations per common share (in dollars per share)	$ 0.09	$ 0.19
Loss from discontinued operations per common share (in dollars per share)	(0.04)	(0.03)
Earnings per common share attributable to common shareholders – basic (in dollars per share)	0.05	0.16
Earnings (loss) per common share attributable to common shareholders – diluted:
Income from continuing operations per common share (in dollars per share)	0.09	0.18
Loss from discontinued operations per common share (in dollars per share)	(0.04)	(0.03)
Earnings per common share attributable to common shareholders – diluted (in dollars per share)	$ 0.05	$ 0.15