Note 1 - Summary of Significant Accounting Policies (Details) - Computation of basic and diluted shares in the calculation of earnings per share (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012		Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Numerator:
Earnings available to common stockholders (in Dollars)	$ 3,356	$ 5,333	[1]	$ 3,513	$ 2,854	$ 2,913	$ 1,998	[1]	$ 1,174	$ 2,529	$ 15,056	$ 8,614	$ 16,401
Denominator:
Weighted average number of basic shares outstanding											12,687	14,050	13,988
Common stock options and restricted stock											594	652	758
Weighted average shares											13,281	14,702	14,746

[1] The effects of the tax benefit in the third quarter of fiscal 2012 resulting from a higher than anticipated Federal Research and Experimentation credit amounted to $0.6 million or $0.04 per diluted share in the third quarter.