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Note 8 - Future Minimum Annual Lease Payments (Details) (USD $)
Mar. 31, 2015
2016 $ 1,825,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
2017 1,521,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
2018 1,297,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
2019 688,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
2020 252,000us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Total minimum lease payments $ 5,583,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue