Note 11 - Employee Savings Plan (Details) (USD $)	12 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	70.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 0	$ 0

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration