RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Mar. 31, 2016 | Mar. 31, 2015 |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | $ 929 | $ 2,499 | $ 1,208 | $ 3,302 | | |
Continuing operations | | | | | | | |
Restructuring activity | | | | | | | |
Balance at the beginning of the period | | | | 6,379 | | | |
Restructuring charges and adjustments | | | | 1,208 | | | |
Payments | | | | (4,279) | | | |
Balance at the end of the period | $ 3,308 | 3,308 | | 3,308 | | $ 6,379 | |
Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | 1,200 | | | |
Fiscal 2016 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 12,000 | |
Fiscal 2016 | Gains, losses and other items, net | France | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 1,400 | |
Fiscal 2015 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | $ 21,800 |
Fiscal 2015 | Gains, losses and other items, net | France | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 3,000 | |
Associate-related reserves | Continuing operations | | | | | | | |
Restructuring activity | | | | | | | |
Balance at the beginning of the period | | | | 2,855 | | | |
Restructuring charges and adjustments | | | | 1,208 | | | |
Payments | | | | (3,268) | | | |
Balance at the end of the period | 795 | 795 | | 795 | | 2,855 | |
Associate-related reserves | United States, Europe, Brazil and Australia | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | 500 | | | | | | |
Associate-related reserves | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | 700 | | | |
Associate-related reserves | Fiscal 2016 | United States, Europe, Brazil and Australia | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 8,600 | |
Associate-related reserves | Fiscal 2016 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 8,600 | |
Associate-related reserves | Fiscal 2015 | United States, Australia, China and Europe | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | 13,300 |
Balance at the end of the period | 300 | 300 | | 300 | | | |
Associate-related reserves | Fiscal 2015 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | 13,300 |
Associate-related reserves | Fiscal 2014 | United States, Australia, China and Europe | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | 700 |
Ongoing contract costs | Continuing operations | | | | | | | |
Restructuring activity | | | | | | | |
Balance at the beginning of the period | | | | 3,524 | | | |
Payments | | | | (1,011) | | | |
Balance at the end of the period | 2,513 | 2,513 | | 2,513 | | 3,524 | |
Ongoing contract costs | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | 6,500 |
Ongoing contract costs | Fiscal 2016 | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 200 | |
Ongoing contract costs | Fiscal 2016 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | 3,000 | |
Ongoing contract costs | Fiscal 2015 | | | | | | | |
Restructuring activity | | | | | | | |
Balance at the end of the period | $ 2,500 | $ 2,500 | | 2,500 | | | |
Ongoing contract costs | Fiscal 2015 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | 6,500 |
Ongoing contract costs | Fiscal 2015 | Gains, losses and other items, net | France | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | $ 1,400 | |
Write-off of leasehold improvements | Fiscal 2016 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | 400 | | | |
Write-off of leasehold improvements | Fiscal 2015 | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | | | | $ 2,000 |
Termination of associates | Gains, losses and other items, net | | | | | | | |
Restructuring activity | | | | | | | |
Restructuring charges and adjustments | | | | $ 500 | | | |