|
STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Schedule of Share-based Compensation) (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
9 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2014
|
Dec. 31, 2013
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
$ 2,918us-gaap_ShareBasedCompensation
|
$ 3,421us-gaap_ShareBasedCompensation
|
$ 8,655us-gaap_ShareBasedCompensation
|
$ 10,268us-gaap_ShareBasedCompensation
|
| Stock options |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
153us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
|
207us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
|
464us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
|
647us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
|
| Restricted stock |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
2,584us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
2,923us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
7,597us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
8,629us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
|
| Stock purchase plan |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
181us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= qtm_StockPurchasePlanMember
|
291us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= qtm_StockPurchasePlanMember
|
594us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= qtm_StockPurchasePlanMember
|
992us-gaap_ShareBasedCompensation
/ us-gaap_AwardTypeAxis
= qtm_StockPurchasePlanMember
|
| Cost of revenue |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
362us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
|
509us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
|
1,109us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
|
1,560us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
|
| Research and development |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
600us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
|
862us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
|
1,983us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
|
2,638us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
|
| Sales and marketing |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
830us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingAndMarketingExpenseMember
|
994us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingAndMarketingExpenseMember
|
2,627us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingAndMarketingExpenseMember
|
3,148us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingAndMarketingExpenseMember
|
| General and administrative |
|
|
|
|
| Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |
|
|
|
|
| Share-based compensation |
$ 1,126us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
|
$ 1,056us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
|
$ 2,936us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
|
$ 2,922us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
|