Note 4 - Stock-Based Compensation (Details) (USD $) | 3 Months Ended |
Jun. 30, 2014 |
Monte Carlo Valuation Model [Member] | Performance Based Restricted Stock Units and Cash Settled Performance Based Restricted Stock Units [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $12.55 |
Time-Vesting Restricted Stock And RSU's [Member] | Executive Officers And Other Key Employees [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) | 745,608 |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | '3 years |
Restricted Stock [Member] | Non-Employee Directors [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) | 81,849 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $11.21 |
Employee Stock Option [Member] | Executive Officers And Other Key Employees [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | '3 years |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 554,641 |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | $11.20 |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period | '10 years |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) | $4.97 |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 1.53% |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | '5 years 80 days |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 48.60% |
Performance Based Restricted Stock Units and Cash Settled Performance Based Restricted Stock Units [Member] | Minimum [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Target Percentage | 0.00% |
Performance Based Restricted Stock Units and Cash Settled Performance Based Restricted Stock Units [Member] | Maximum [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Target Percentage | 150.00% |
Performance Based Restricted Stock Units and Cash Settled Performance Based Restricted Stock Units [Member] | ' |
Note 4 - Stock-Based Compensation (Details) [Line Items] | ' |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares) | 104,359 |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 0.81% |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 44.50% |
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants Average Closing Price (in Dollars per share) | $11.28 |