Note 7 - Computations of Basic and Diluted Loss Per Common Share (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Numerator for basic and diluted earnings per share:
Net income from continuing operations	$ 763,000	$ 2,163,000	$ 1,368,000	$ 2,275,000
Payment of preferred stock dividends	(25,000)	(27,000)	(52,000)	(55,000)
Net income from continuing operations available to common stockholders	467,000	1,158,000	(802,000)	854,000
Loss from discontinued operations, net of tax		(604,000)	(684,000)	(992,000)
Loss on sale of discontinued operations, net of tax	(271,000)	(374,000)	(1,434,000)	(374,000)
Weighted average shares used in computation - basic (in shares)	38,987,991	54,099,997	46,741,995	54,052,138
Assumed conversion of preferred stock (in shares)	1,727,768	2,095,784	1,727,768	769,630
Effect of outstanding stock options (in shares)	634,761	759,960	520,797	700,259
Weighted average shares used in computation - diluted (in shares)	41,350,520	56,955,741	48,990,560	55,522,027
Earnings (loss) per common share attributable to common shareholders – basic:
Income from continuing operations per common share (in dollars per share)	$ 0.02	$ 0.03	$ 0.03	$ 0.02
Loss from discontinued operations per common share (in dollars per share)		$ (0.01)	$ (0.05)	$ (0.01)
Earnings per common share attributable to common stockholders – basic (in dollars per share)	$ 0.02	$ 0.02	$ (0.02)	$ 0.01
Income from continuing operations per common share (in dollars per share)	$ 0.02	$ 0.03	$ 0.02	$ 0.02
Loss from discontinued operations per common share (in dollars per share)		$ (0.01)	$ (0.04)	$ (0.01)
Earnings per common share attributable to common shareholders – diluted (in dollars per share)	$ 0.02	$ 0.02	$ (0.02)	$ 0.01
Continuing Operations [Member]
Numerator for basic and diluted earnings per share:
Loss from discontinued operations, net of tax		$ (604,000)	$ (684,000)	$ (992,000)