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STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares granted, stock awards | 1,126,000 |  |
Share-based compensation expense | $ 6,698,000 | $ 8,916,000 | $ 11,583,000
Compensation expense related to stock options | 6,698,000 | 8,916,000 | 11,583,000
Restricted stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Compensation expense related to stock options | 6,230,000 | $ 8,220,000 | 10,102,000
Unrecognized compensation cost | 7,400,000 |  |
Weighted-average period for recognition |  | 1 year 8 months 22 days |
Fair value of awards released | $ 2,800,000 | $ 9,900,000 | $ 7,700,000
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Pricing model used in estimating grant-date fair value | Black-Scholes |  |
Stock options granted | 0 | 0 | 0
Realized tax deduction from stock option exercises and other awards | $ 0 | $ 0 | $ 0
Unrecognized compensation cost related to stock options granted | 0 |  |
Compensation expense related to stock options | 0 | 2,000 | 617,000
Total intrinsic value of options exercised | $ 0 | $ 300,000 | $ 400,000
Stock options | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Prices for stock options exercised | $ 0.88 |  |
Stock options | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Prices for stock options exercised | $ 14.48 |  |
Market RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Pricing model used in estimating grant-date fair value | Monte-Carlo |  | Monte Carlo
Number of shares granted, stock awards |  |  | 100,000
Number of days over average stock price is calculated |  |  | 60 days
Expected volatility rate |  |  | 66.00%
Risk free interest rate |  |  | 0.50%
Fair value at the grant date |  |  | $ 700,000
Performance RSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares granted, stock awards | 400,000 | 200,000 | 300,000
Fair value at the grant date | $ 1,400,000 | $ 2,600,000 | $ 3,000,000
Share-based compensation expense | $ 400,000 | $ 0 | $ 300,000
2012 Long-Term Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total shares authorized | 4,910,000.00 |  |
Shares available for grant | 3,000,000 |  |
Stock options and restricted shares outstanding | 1,900,000 |  |
2012 Long-Term Incentive Plan | Unvested restricted stock units | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
2012 Long-Term Incentive Plan | Unvested restricted stock units | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 4 years |  |
2012 Long-Term Incentive Plan | Restricted stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 1 year |  |
2012 Long-Term Incentive Plan | Market RSUs | Vesting Date One |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected term |  |  | 10 months
2012 Long-Term Incentive Plan | Market RSUs | Vesting Date Two |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected term |  |  | 22 months
2012 Long-Term Incentive Plan | Market RSUs | Vesting Date Three |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Expected term |  |  | 34 months
2012 Long-Term Incentive Plan | Market RSUs | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period |  |  | 2 years
Other Stock Incentive Plans | Restricted stock | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 1 year |  |
Other Stock Incentive Plans | Restricted stock | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 4 years |  |
Other Stock Incentive Plans | Stock options | Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 1 year |  |
Stock options granted contractual terms | 7 years |  |
Other Stock Incentive Plans | Stock options | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 4 years |  |
Stock options granted contractual terms | 10 years |  |
Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total shares authorized | 8,800,000 |  |
Shares available for grant | 800,000 |  |
Discount on market price to purchase stock | 15.00% |  |
Shares issued | 8,000,000 |  |
Maximum amount of shares to be purchased in any offering period | 250,000 |  |
Duration of offering periods | 6 months |  |
Number of shares purchased | 300,000 | 400,000 | 400,000
Weighted-average price of stock purchased (in dollars per share) | $ 3.48 | $ 5.36 | $ 8.32
Expected volatility rate | 64.18% | 77.94% | 36.58%
Risk free interest rate | 0.55% | 0.26% | 0.07%
Expected term | 6 months | 6 months | 6 months

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