Note 8 - Stock-Based Compensation Plans (Detail) - Summary of the Changes in Outstanding Options for All of the Company's Plans: (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Mar. 31, 2012
Shares	1,348,437
Weighted Average Exercise Price (in Dollars per share)	$ 12.44
Remaining Weighted Average Contract Life	5 years 292 days	5 years 73 days
Aggregate Intrinsic Value (in Dollars)	$ 14
Options exercisable at December 31, 2012	958,687
Options exercisable at December 31, 2012 (in Dollars per share)	$ 12.79
Options exercisable at December 31, 2012	4 years 146 days
Options exercisable at December 31, 2012 (in Dollars)	1
Expected to vest as of December 31, 2012	525,953
Expected to vest as of December 31, 2012 (in Dollars per share)	$ 7.53
Expected to vest as of December 31, 2012	8 years 109 days
Granted	325,000
Granted (in Dollars per share)	$ 3.58
Expired/forfeited	(168,187)
Expired/forfeited (in Dollars per share)	$ 9.63
Shares	1,505,250	1,348,437
Weighted Average Exercise Price (in Dollars per share)	$ 10.86	$ 12.44
Remaining Weighted Average Contract Life	5 years 292 days	5 years 73 days
Aggregate Intrinsic Value (in Dollars)	$ 1	$ 14