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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Wavecell Pte. Ltd. | Fuze | Cumulative Effect, Period of Adoption, Adjustment | Common Stock | Common Stock Wavecell Pte. Ltd. | Common Stock Fuze | Common Stock Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-in Capital | Additional Paid-in Capital Fuze | Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit | Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Mar. 31, 2019 |  |  |  |  | 96,119,888 |  |  |  |  |  |  |  |  |
Beginning balance at Mar. 31, 2019 | $ 249,390 |  |  |  | $ 96 |  |  |  | $ 506,949 |  |  | $ (7,353) | $ (250,302) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock plans, less withholding (in shares) |  |  |  |  |  |  |  | 4,452,267 |  |  |  |  |  |
Issuance of common stock under stock plans, less withholding |  |  |  | $ 7,777 |  |  |  | $ 4 |  |  | $ 7,773 |  |  |
Issuance of common stock related to acquisition (in shares) |  |  |  |  | 2,606,466 |  |  |  |  |  |  |  |  |
Issuance of common stock related to acquisition | 35,840 |  |  |  | $ 3 |  |  |  | 35,837 |  |  |  |  |
Stock-based compensation expense | 71,821 |  |  |  |  |  |  |  | 71,821 |  |  |  |  |
Equity component of convertible senior notes, net of issuance costs | 3,094 |  |  |  |  |  |  |  | 3,094 |  |  |  |  |
Unrealized investment loss/gain | (203) |  |  |  |  |  |  |  |  |  |  | (203) |  |
Foreign currency translation adjustment | (4,620) |  |  |  |  |  |  |  |  |  |  | (4,620) |  |
Net loss | (172,368) |  |  |  |  |  |  |  |  |  |  |  | (172,368) |
Ending balance (in shares) at Mar. 31, 2020 |  |  |  |  | 103,178,621 |  |  |  |  |  |  |  |  |
Ending balance at Mar. 31, 2020 | 190,731 |  |  | $ (2,800) | $ 103 |  |  |  | 625,474 |  |  | (12,176) | (422,670) | $ (2,800)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock plans, less withholding (in shares) |  |  |  |  | 6,067,672 |  |  |  |  |  |  |  |  |
Issuance of common stock under stock plans, less withholding | 13,269 |  |  |  | $ 6 |  |  |  | 13,263 |  |  |  |  |
Issuance of common stock related to acquisition (in shares) |  |  |  |  | (111,554) |  |  |  |  |  |  |  |  |
Issuance of common stock related to acquisition | 8,489 |  |  |  |  |  |  |  | 8,489 |  |  |  |  |
Stock-based compensation expense | 108,417 |  |  |  |  |  |  |  | 108,417 |  |  |  |  |
Unrealized investment loss/gain | 247 |  |  |  |  |  |  |  |  |  |  | 247 |  |
Foreign currency translation adjustment | 7,736 |  |  |  |  |  |  |  |  |  |  | 7,736 |  |
Net loss | (165,585) |  |  |  |  |  |  |  |  |  |  |  | (165,585) |
Ending balance (in shares) at Mar. 31, 2021 |  |  |  |  | 109,134,739 |  |  |  |  |  |  |  |  |
Ending balance at Mar. 31, 2021 | 160,504 |  |  |  | $ 109 |  |  |  | 755,643 |  |  | (4,193) | (591,055) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock under stock plans, less withholding (in shares) |  |  |  |  | 6,969,809 |  |  |  |  |  |  |  |  |
Issuance of common stock under stock plans, less withholding | 15,922 |  |  |  | $ 7 |  |  |  | 15,915 |  |  |  |  |
Issuance of common stock related to acquisition (in shares) |  |  |  |  |  | (25,536) | 4,070,355 |  |  |  |  |  |  |
Issuance of common stock related to acquisition |  | $ 0 | $ 80,856 |  |  |  | $ 4 |  |  | $ 80,852 |  |  |  |
Stock-based compensation expense | 132,736 |  |  |  |  |  |  |  | 132,736 |  |  |  |  |
Stock-based compensation expense related to Fuze acquisition (in shares) |  |  |  |  | 53,498 |  |  |  |  |  |  |  |  |
Stock-based compensation expense related to Fuze acquisition | 828 |  |  |  |  |  |  |  | 828 |  |  |  |  |
Share repurchase (in shares) |  |  |  |  | (2,340,058) |  |  |  |  |  |  |  |  |
Share repurchase | (44,976) |  |  |  | $ (2) |  |  |  | (44,974) |  |  |  |  |
Equity component of convertible senior notes, net of issuance costs | 15,599 |  |  |  |  |  |  |  | 15,599 |  |  |  |  |
Unrealized investment loss/gain | (571) |  |  |  |  |  |  |  |  |  |  | (571) |  |
Foreign currency translation adjustment | (3,149) |  |  |  |  |  |  |  |  |  |  | (3,149) |  |
Net loss | (175,383) |  |  |  |  |  |  |  |  |  |  |  | (175,383) |
Ending balance at Mar. 31, 2022 | $ 182,366 |  |  |  | $ 118 |  |  |  | $ 956,599 |  |  | $ (7,913) | $ (766,438) |

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