Note 11 - Stockholders' Equity and Stock Plans (Details) - Stock Options Activity (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Stock Options Activity [Abstract]
Number of Options	1,692,750	1,479,000	1,348,437	1,328,937
Weighted Average Exercise Price (in Dollars per share)	$ 10.12	$ 10.80	$ 12.44	$ 12.62
Granted	511,000	327,500	30,000
Granted (in Dollars per share)	$ 8.00	$ 3.58	$ 5.24
Exercised			(7,500)
Exercised (in Dollars per share)			$ 2.67
Forfeited	(297,250)	(196,937)	(3,000)
Forfeited (in Dollars per share)	$ 9.85	$ 10.00	$ 8.87
Options outstanding at March 31, 2014	1,692,750	1,479,000	1,348,437	1,328,937
Options outstanding at March 31, 2014 (in Dollars per share)	$ 10.12	$ 10.80	$ 12.44	$ 12.62
Options outstanding at March 31, 2014	6 years 73 days
Options outstanding at March 31, 2014 (in Dollars)	$ 982
Exercisable at March 31, 2014	945,500
Exercisable at March 31, 2014 (in Dollars per share)	$ 12.18
Exercisable at March 31, 2014	4 years 109 days
Exercisable at March 31, 2014 (in Dollars)	346
Vested and expected to vest at March 31, 2014	1,606,829
Vested and expected to vest at March 31, 2014	10 years 98 days
Vested and expected to vest at March 31, 2014	6 years
Vested and expected to vest at March 31, 2014 (in Dollars)	$ 928