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STOCK-BASED COMPENSATION (Tables) | 3 Months Ended
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Jun. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Expense and Activity | The following tables summarize information pertaining to the stock-based compensation expense from stock options and stock awards (in thousands, except weighted-average grant-date fair value and recognition period):
|  | Three Months Ended June 30,
|  | 2019 |  | 2018
Cost of service revenue |  | $ | 1,731 |  |  | $ | 1,026 |
Research and development |  | 3,864 |  |  | 2,194 |
Sales and marketing |  | 3,921 |  |  | 2,398 |
General and administrative |  | 4,081 |  |  | 3,293 |
Total |  | $ | 13,597 |  |  | $ | 8,911 |
|  | Three Months Ended June 30,
|  | 2019 |  | 2018
Stock options outstanding at the beginning of the period: |  | 3,114 |  |  | 3,998 |
Options granted |  | — |  |  | 81 |
Options exercised |  | (124 | ) |  | (115 | )
Options canceled and forfeited |  | (16 | ) |  | (73 | )
Options outstanding at the end of the period: |  | 2,974 |  |  | 3,891 |
Weighted-average fair value of grants during the period |  | $ | — |  |  | $ | 8.57 |
Total intrinsic value of options exercised during the period |  | $ | 1,402 |  |  | $ | 1,186 |
Weighted-average remaining recognition period at period-end (in years) |  | 2.46 |  |  | 2.35 |
Stock awards outstanding at the beginning of the period: |  | 7,820 |  |  | 5,939 |
Stock awards granted |  | 1,147 |  |  | 948 |
Stock awards vested |  | (329 | ) |  | (299 | )
Stock awards canceled and forfeited |  | (445 | ) |  | (168 | )
Stock awards outstanding at the end of the period: |  | 8,193 |  |  | 6,420 |
Weighted-average fair value of grants during the period |  | $ | 22.40 |  |  | $ | 22.20 |
Weighted-average remaining recognition period at period-end (in years) |  | 2.11 |  |  | 2.40 |
Total unrecognized compensation expense at period-end |  | $ | 109,422 |  |  | $ | 67,025 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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