Note 13 - Stockholders' Equity (Details) - USD ($) | Dec. 03, 2012 | Aug. 31, 2013 | Mar. 31, 2015 | Mar. 31, 2014 | Mar. 11, 2015 | Nov. 07, 2012 |
Maximum [Member] | Stock Plan 1996 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 10 years | | | |
Maximum [Member] | Plan 1999 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 10 years | | | |
Maximum [Member] | Supplemental Plan 2001 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 10 years | | | |
Vesting One Year After the Vesting Commencement Date [Member] | Stock Plan 1996 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | | | 25.00% | | | |
Vesting One Year After the Vesting Commencement Date [Member] | Plan 1999 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | | | 25.00% | | | |
Vesting One Year After the Vesting Commencement Date [Member] | Supplemental Plan 2001 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | | | 25.00% | | | |
Based Upon Achievement of Committed Monthly Recurring Revenue Targets [Member] | Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 60.00% | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years | | | | | |
Award Vesting Percentage, Amount Withheld from Vesting until Achievement of Profitability, Percent | 50.00% | | | | | |
Vesting Based upon Operating Profit Targets [Member] | Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 40.00% | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years | | | | | |
Employee Stock Purchase Plan (Member) | Originally Reserved for Issuance [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | | | | 100,000 |
Employee Stock Purchase Plan (Member) | Per Purchase Date [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | 5,000 | | | |
Employee Stock Purchase Plan (Member) | Per Year [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | 10,000 | | | |
Employee Stock Purchase Plan (Member) | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Allocated Share-based Compensation Expense (in Dollars) | | | $ 80,000 | $ 114,000 | | |
Percent of Fair Market Value | | | 85.00% | | | |
Common Stock, Shares, Issued | | | 48,833 | 37,533 | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | | | | 553,000 |
Common Stock Purchased through Payroll Deductions, Maximum Percent of Employees' Cash Compensation | | | 15.00% | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date | | | 85.00% | | | |
Purchase Plan Eligibility, Minimum Number of Months Worked Per Year | | | 5 | | | |
Purchase Plan Eligibility, Minimum Number of Hours Worked Per Week | | | 20 | | | |
Percent Ownership Excluded from Plan | | | 5.00% | | | |
Class of Warrant or Right, Maximum Amount Available to Purchase (in Dollars) | | | $ 25,000 | | | |
Offering Period, Term | | | 6 months | | | |
Purchase Plan, Term | | | 20 years | | | |
Stock Plan 1996 [Member] | Nonstatutory Stock Options [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Percent of Fair Market Value | | | 85.00% | | | |
Stock Plan 1996 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Percent of Fair Market Value | | | 100.00% | | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | 815,000 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 36 months | | | |
Plan 1999 [Member] | First Year of Employment [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | 66,000 | | | |
Plan 1999 [Member] | Nonstatutory Stock Options [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Percent of Fair Market Value | | | 85.00% | | | |
Plan 1999 [Member] | Incentive Stock Options [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Percent of Fair Market Value | | | 100.00% | | | |
Plan 1999 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | 1,551,000 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 36 months | | | |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | | | 33,000 | | | |
Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 220,000 | | | | | |
Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Financial Officer [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 50,000 | | | | | |
Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Strategy Officer [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 50,000 | | | | | |
Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Operating Officer [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 50,000 | | | | | |
Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Commercial Officer [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 50,000 | | | | | |
Long Term Performance Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Allocated Share-based Compensation Expense (in Dollars) | | | $ 100,000 | $ 400,000 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 420,000 | | | | | |
Supplemental Plan 2001 [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Percent of Fair Market Value | | | 85.00% | | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | 250,000 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | | | 36 months | | | |
Mr. Mathieu [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | 187,000 | | | |
Restricted Stock Units (RSUs) [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | | | 234,000 | 530,000 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding (in Dollars) | | | $ 2,300,000 | $ 4,300,000 | | |
CEO and COO [Member] | | | | | | |
Note 13 - Stockholders' Equity (Details) [Line Items] | | | | | | |
Allocated Share-based Compensation Expense (in Dollars) | | $ (500,000) | | | | |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars) | | | $ 4,500,000 | | | |
Common Stock, Shares, Issued | | | 8,019,000 | 4,790,000 | | |
Common Stock, Capital Shares Reserved for Future Issuance | | | 2,010,709 | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | | | 234,000 | 530,000 | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term | | | 7 years 189 days | | | |
Share Price (in Dollars per share) | | | $ 6.50 | | $ 0.19 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value (in Dollars) | | | $ 198,000 | $ 219,000 | | |