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REVISION OF PRIOR PERIOD FINANCIAL STATEMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Sep. 30, 2016 | Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets | $ 9,969 |  |  |  | $ 8,007 |  |  |  |  | $ 9,969 | $ 8,007 |  |
Total current assets | 188,325 |  |  |  | 212,645 |  |  |  |  | 188,325 | 212,645 |  |
Total assets | 225,027 |  |  |  | 230,600 |  |  |  |  | 225,027 | 230,600 |  |
Accumulated deficit | (593,295) |  |  |  | (596,940) |  |  |  |  | (593,295) | (596,940) |  |
Total stockholders’ deficit | (115,999) |  |  |  | (125,885) |  |  |  |  | (115,999) | (125,885) | $ (57,672) | $ (84,957)
Product cost of revenue |  |  |  |  |  |  | $ 53,073 | $ 47,244 |  | 231,207 | 207,139 | 237,400 |
Service cost of revenue |  |  | $ 14,664 | $ 15,506 | 15,239 | $ 15,550 | 17,838 | 17,152 | $ 30,170 | 60,714 | 65,778 | 70,686 |
Cost of Revenue |  |  | 79,016 | 65,638 | 65,738 | 71,873 | 70,911 | 64,396 | 144,654 | 291,921 | 272,917 | 308,086 |
Gross margin | 52,050 | $ 55,002 | 55,726 | 50,646 | 54,291 | 56,175 | 46,114 | 46,460 | 106,372 | 213,424 | 203,041 | 245,009 |
Operating Income (Loss) |  |  | 5,592 | (1,791) | (50,708) | 1,432 | (9,822) | (8,712) | 3,801 | 12,148 | (67,809) | 14,720 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  |  | 4,117 | (3,143) | (52,818) | (390) | (11,083) | (10,921) | 974 | 4,757 | (75,211) | 17,801 |
Net income (loss) | $ 1,913 | 5,006 | 4,072 | (3,520) | (52,884) | (821) | (11,430) | (11,260) | 552 | $ 3,645 | (76,394) | 17,083 |
As Reported |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets |  |  |  |  | 6,953 |  |  |  |  |  | 6,953 |  |
Total current assets |  |  |  |  | 211,591 |  |  |  |  |  | 211,591 |  |
Total assets |  |  |  |  | 229,546 |  |  |  |  |  | 229,546 |  |
Accumulated deficit |  |  |  |  | (597,994) |  |  |  |  |  | (597,994) |  |
Total stockholders’ deficit |  |  |  |  | (126,939) |  |  |  |  |  | (126,939) |  |
Product cost of revenue |  |  |  |  |  |  | 53,073 | 46,964 |  |  | 206,859 | 237,679 |
Service cost of revenue |  |  | 14,910 | 15,781 | 14,757 | 15,028 | 17,635 | 16,927 | 30,691 |  | 64,347 | 70,730 |
Cost of Revenue |  |  | 79,262 | 65,913 | 65,256 | 71,351 | 70,708 | 63,891 | 145,175 |  | 271,206 | 308,409 |
Gross margin |  |  | 55,480 | 50,371 | 54,773 | 56,697 | 46,317 | 46,965 | 105,851 |  | 204,752 | 244,686 |
Operating Income (Loss) |  |  | 5,346 | (2,066) | (50,226) | 1,954 | (9,619) | (8,207) | 3,280 |  | (66,098) | 14,397 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  |  | 3,871 | (3,418) | (52,336) | 132 | (10,880) | (10,416) | 453 |  | (73,500) | 17,478 |
Net income (loss) |  |  | 3,826 | (3,795) | (52,402) | (299) | (11,227) | (10,755) | 31 |  | (74,683) | 16,760 |
Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets |  |  |  |  | 1,054 |  |  |  |  |  | 1,054 |  |
Total current assets |  |  |  |  | 1,054 |  |  |  |  |  | 1,054 |  |
Total assets |  |  |  |  | 1,054 |  |  |  |  |  | 1,054 |  |
Accumulated deficit |  |  |  |  | 1,054 |  |  |  |  |  | 1,054 |  |
Total stockholders’ deficit |  |  |  |  | 1,054 |  |  |  |  |  | 1,054 |  |
Product cost of revenue |  |  |  |  |  |  | 0 | 280 |  |  | 280 | (279) |
Service cost of revenue |  |  | (246) | (275) | 482 | 522 | 203 | 225 | (521) |  | 1,431 | (44) |
Cost of Revenue |  |  | (246) | (275) | 482 | 522 | 203 | 505 | (521) |  | 1,711 | (323) |
Gross margin |  |  | 246 | 275 | (482) | (522) | (203) | (505) | 521 |  | (1,711) | 323 |
Operating Income (Loss) |  |  | 246 | 275 | (482) | (522) | (203) | (505) | 521 |  | (1,711) | 323 |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |  |  | 246 | 275 | (482) | (522) | (203) | (505) | 521 |  | (1,711) | 323 |
Net income (loss) |  |  | $ 246 | $ 275 | $ (482) | $ (522) | $ (203) | $ (505) | $ 521 |  | $ (1,711) | $ 323 |
Adjustment | Previously expensed costs for certain third party maintenance contracts |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Accumulated deficit |  | $ 1,600 |  |  |  |  |  |  |  |  |  |  |

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