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Consolidated Statements of Stockholders' Deficit - USD ($) shares in Thousands, $ in Thousands | Total | 2022 Notes | 2025 Notes | Series E preferred shares | Common stock | Preferred Stock | Preferred Stock Series E preferred shares | Common Stock | Common Stock 2022 Notes | Common Stock 2025 Notes | Common Stock Common stock | Additional Paid-in Capital | Additional Paid-in Capital 2022 Notes | Additional Paid-in Capital 2025 Notes | Additional Paid-in Capital Series E preferred shares | Additional Paid-in Capital Common stock | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2018 | $ (36,525) |  |  |  |  | $ 0 |  | $ 74 |  |  |  | $ 546,230 |  |  |  |  | $ (577,817) | $ (4,877) | $ (135)
Beginning balance, shares (in shares) at Dec. 31, 2018 |  |  |  |  |  | 0 |  | 73,980 |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (40,110) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (40,125) |  | 15
Foreign currency translation adjustment | 998 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 998 |
Exercise of stock options and vesting of restricted stock units | 3,265 |  |  |  |  |  |  | $ 2 |  |  |  | 3,263 |  |  |  |  |  |  |
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (in shares) |  |  |  |  |  |  |  | 2,254 |  |  |  |  |  |  |  |  |  |  |
Issuance of shares |  |  |  | $ 10,000 | $ 1,439 |  |  |  |  |  |  |  |  |  | $ 10,000 | $ 1,439 |  |  |
Issuance of shares (in shares) |  |  |  |  |  |  | 10 |  |  |  | 263 |  |  |  |  |  |  |  |
Taxes withheld on net settled vesting of restricted stock units | (1,269) |  |  |  |  |  |  |  |  |  |  | (1,269) |  |  |  |  |  |  |
Exercise of warrants | 17,542 |  |  |  |  |  |  | $ 6 |  |  |  | 17,536 |  |  |  |  |  |  |
Exercise of warrants (in shares) |  |  |  |  |  |  |  | 5,477 |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 7,302 |  |  |  |  |  |  |  |  |  |  | 7,302 |  |  |  |  |  |  |
Series E preferred stock dividends | 0 |  |  |  |  |  |  |  |  |  |  | 361 |  |  |  |  | (361) |  |
Ending balance at Dec. 31, 2019 | (37,358) |  |  |  |  | $ 0 |  | $ 82 |  |  |  | 584,862 |  |  |  |  | (618,303) | (3,879) | (120)
Ending balance, shares (in shares) at Dec. 31, 2019 |  |  |  |  |  | 10 |  | 81,974 |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (111,186) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (111,215) |  | 29
Foreign currency translation adjustment | (3,093) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,093) |
Exercise of stock options and vesting of restricted stock units | 5,422 |  |  |  |  |  |  | $ 2 |  |  |  | 5,420 |  |  |  |  |  |  |
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (in shares) |  |  |  |  |  |  |  | 2,081 |  |  |  |  |  |  |  |  |  |  |
Issuance of shares |  |  |  | 25,000 |  |  |  |  |  |  |  |  |  |  | 25,000 |  |  |  |
Issuance of shares (in shares) |  |  |  |  |  |  | 25 |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Series E preferred stock in lieu of interest |  |  |  | 2,330 |  |  |  |  |  |  |  |  |  |  | 2,330 |  |  |  |
Issuance of Series E preferred stock in lieu of interest (in shares) |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of Series E preferred stock |  |  |  | $ (2,354) |  |  |  |  |  |  |  |  |  |  | $ (2,354) |  |  |  |
Repurchase of Series E preferred stock (in shares) |  |  |  |  |  |  | (2) |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common shares in connection with conversion or exchange of notes |  | $ 66,088 | $ 14,354 |  |  |  |  |  | $ 14 | $ 1 |  |  | $ 66,074 | $ 14,353 |  |  |  |  |
Issuance of common shares in connection with conversion or exchange of notes (in shares) |  |  |  |  |  |  |  |  | 13,739 | 1,177 |  |  |  |  |  |  |  |  |
Taxes withheld on net settled vesting of restricted stock units | (354) |  |  |  |  |  |  |  |  |  |  | (354) |  |  |  |  |  |  |
Exercise of warrants | 1,861 |  |  |  |  |  |  | $ 0 |  |  |  | 1,861 |  |  |  |  |  |  |
Exercise of warrants (in shares) |  |  |  |  |  |  |  | 338 |  |  |  |  |  |  |  |  |  |  |
Share-based compensation | 10,419 |  |  |  |  |  |  |  |  |  |  | 10,419 |  |  |  |  |  |  |
Series E preferred stock dividends | 0 |  |  |  |  |  |  |  |  |  |  | 2,904 |  |  |  |  | (2,904) |  |
Issuance of common shares under settlement agreement | 972 |  |  |  |  |  |  |  |  |  |  | 972 |  |  |  |  |  |  |
Issuance of common shares under settlement (in shares) |  |  |  |  |  |  |  | 90 |  |  |  |  |  |  |  |  |  |  |
Ending balance at Dec. 31, 2020 | (27,899) |  |  |  |  | $ 0 |  | $ 99 |  |  |  | 711,487 |  |  |  |  | (732,422) | (6,972) | (91)
Ending balance, shares (in shares) at Dec. 31, 2020 |  |  |  |  |  | 35 |  | 99,399 |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (47,911) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (48,125) |  | 214
Foreign currency translation adjustment | (3,167) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,167) |
Exercise of stock options and vesting of restricted stock units | 4,765 |  |  |  |  |  |  | $ 2 |  |  |  | 4,763 |  |  |  |  |  |  |
Exercise of stock options, vesting of restricted stock units and stock issued under employee stock purchase plan (in shares) |  |  |  |  |  |  |  | 2,512 |  |  |  |  |  |  |  |  |  |  |
Issuance of shares |  |  |  |  | $ 29,370 |  |  |  |  |  | $ 2 |  |  |  |  | $ 29,368 |  |  |
Issuance of shares (in shares) |  |  |  |  |  |  |  |  |  |  | 1,516 |  |  |  |  |  |  |  |
Issuance of common shares in connection with conversion or exchange of notes |  |  | $ 5,382 |  |  |  |  |  |  | $ 0 |  |  |  | $ 5,382 |  |  |  |  |
Issuance of common shares in connection with conversion or exchange of notes (in shares) |  |  |  |  |  |  |  |  |  | 429 |  |  |  |  |  |  |  |  |
Taxes withheld on net settled vesting of restricted stock units | (1,279) |  |  |  |  |  |  |  |  |  |  | (1,279) |  |  |  |  |  |  |
Share-based compensation | 16,649 |  |  |  |  |  |  |  |  |  |  | 16,649 |  |  |  |  |  |  |
Series E preferred stock dividends | 0 |  |  |  |  |  |  |  |  |  |  | 3,139 |  |  |  |  | (3,139) |  |
Divestiture of Ctrack South Africa | (889) |  |  |  |  |  |  |  |  |  |  | 8 |  |  |  |  | (2,497) | 1,608 | (8)
Series E preferred stock exchange | 0 |  |  |  |  |  |  | $ 2 |  |  |  | 1,102 |  |  |  |  | (1,104) |  |
Series E preferred stock exchange (in shares) |  |  |  |  |  | (10) |  | 1,525 |  |  |  |  |  |  |  |  |  |  |
Net noncontrolling interest acquired | 125 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 240 |  | (115)
Ending balance at Dec. 31, 2021 | $ (24,854) |  |  |  |  | $ 0 |  | $ 105 |  |  |  | $ 770,619 |  |  |  |  | $ (787,047) | $ (8,531) | $ 0
Ending balance, shares (in shares) at Dec. 31, 2021 |  |  |  |  |  | 25 |  | 105,381 |  |  |  |  |  |  |  |  |  |  |

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