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Note 8 - Employee Benefit Plans | 12 Months Ended
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Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | Note 8. Employee Benefit Plans We adopted our 401(k) plan effective January 1, 2000. Participation is voluntary and employees are eligible the first day of the following month that an employee attains an age of 21 and one hour of service time. We match 50% of the employee’s contribution up to 6% of the employee’s salary and those contributions are vested immediately. Prior to the year ended March 31, 2014, our Bozeman, Montana facility (“Bozeman’) operated on a separate 401(k) plan. That plan was adopted effective August 15, 1996. Participation was voluntary and employees were eligible to participate at age 21 and after one year of employment. Bozeman matched 100% of the employee’s contribution up to 4% of the employee’s salary and those contributions vested immediately. Bozeman also offered a Roth Savings Plan which was incorporated into their 401(k) Plan with identical requirements and contributions. The Bozeman 401(k) plan was merged into our plan during the year ended March 31, 2014. We contributed $330,000, $214,000 and $214,000, respectively, to all plans for the years ended March 31, 2015, 2014 and 2013.

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