Note 6 - Cash, Cash Equivalents and Marketable Securities Recorded at Fair Value (Details) - Summary of Available-For-Sale Securities (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Mar. 31, 2014	Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	$ 7,737	$ 13,813
Unrealized Gains	4	16
Unrealized Losses	(1)	(12)
Fair Value	7,740	13,817
Cash & Cash Equivalents	4,823	1,966
Short-term Marketable Securities	2,718	6,305
Long-term Marketable Securities	199	5,546
Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	1,144	1,257
Fair Value	1,144	1,257
Cash & Cash Equivalents	1,144	1,257
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	3,679	709
Fair Value	3,679	709
Cash & Cash Equivalents	3,679	709
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	335	544
Unrealized Gains	1
Unrealized Losses		(1)
Fair Value	336	543
Short-term Marketable Securities	336
Long-term Marketable Securities		543
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	1,998	4,915
Unrealized Gains	2	1
Unrealized Losses	(1)	(11)
Fair Value	1,999	4,905
Short-term Marketable Securities	1,800	2,745
Long-term Marketable Securities	199	2,160
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	581	5,728
Unrealized Gains	1	15
Fair Value	582	5,743
Short-term Marketable Securities	582	2,900
Long-term Marketable Securities		2,843
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost		503
Fair Value		503
Short-term Marketable Securities		503
Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost		127
Fair Value		127
Short-term Marketable Securities		127
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost		30
Fair Value		30
Short-term Marketable Securities		30
Fair Value, Inputs, Level 1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	4,823	2,469
Fair Value	4,823	2,469
Cash & Cash Equivalents	4,823	1,966
Short-term Marketable Securities		503
Fair Value, Inputs, Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	2,914	11,344
Unrealized Gains	4	16
Unrealized Losses	(1)	(12)
Fair Value	2,917	11,348
Short-term Marketable Securities	2,718	5,802
Long-term Marketable Securities	$ 199	$ 5,546