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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Total | GulfMark | Common stock | Common stock GulfMark | Additional paid- in capital | Additional paid- in capital GulfMark | Retained earnings (deficit) | Accumulated other comprehensive income (loss) | Non controlling interest
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (Predecessor) at Mar. 31, 2016 | $ 2,292,139 |  | $ 4,707 |  | $ 166,604 |  | $ 2,121,660 | $ (6,866) | $ 6,034
Total comprehensive loss | Predecessor | (653,489) |  |  |  |  |  | (660,118) | (3,478) | 10,107
Stock option activity/expense | Predecessor | 1,146 |  |  |  | 1,146 |  |  |  |
Amortization/cancellation of restricted stock units | Predecessor | (2,152) |  | 5 |  | (2,529) |  | 372 |  |
Balance (Predecessor) at Mar. 31, 2017 | 1,637,644 |  | 4,712 |  | 165,221 |  | 1,461,914 | (10,344) | 16,141
Total comprehensive loss | Predecessor | (1,649,344) |  |  |  |  |  | (1,646,909) | (2,435) |
Stock option activity/expense | Predecessor | 390 |  |  |  | 390 |  |  |  |
Cancellation/forfeiture of restricted stock units | Predecessor | 1,254 |  |  |  | 1,254 |  |  |  |
Amortization of restricted stock units | Predecessor | 2 |  |  |  | 2 |  |  |  |
Cash paid to noncontrolling interests | Predecessor | (1,200) |  |  |  |  |  |  |  | (1,200)
Balance (Predecessor) at Jul. 31, 2017 | (11,254) |  | 4,712 |  | 166,867 |  | (184,995) | (12,779) | 14,941
Balance at Jul. 31, 2017 | 1,057,084 |  | 18 |  | 1,055,391 |  |  | 0 | 1,675
Cancellation of Predecessor equity | Predecessor | 12,929 |  | (4,712) |  | (166,867) |  | 184,995 | 12,779 | (13,266)
Balance (Predecessor) at Jul. 31, 2017 | 1,675 |  |  |  |  |  |  |  | 1,675
Issuance of Successor common stock and warrants | 1,055,409 |  | 18 |  | 1,055,391 |  |  |  |
Total comprehensive loss | (38,873) |  |  |  |  |  | (39,266) | (147) | 540
Issuance of common stock | 2 |  | 4 |  | (2) |  |  |  |
Amortization/cancellation of restricted stock units | 3,731 |  |  |  | 3,731 |  |  |  |
Balance at Dec. 31, 2017 | 1,021,944 |  | 22 |  | 1,059,120 |  | (39,266) | (147) | 2,215
Balance at Dec. 31, 2017 | 2,215 |  |  |  |  |  |  |  |
Total comprehensive loss | (169,430) |  |  |  |  |  | (171,517) | 2,341 | (254)
Issuance of common stock |  | $ 285,492 |  | $ 9 |  | $ 285,483 |  |  |
Issuance of common stock from exercise of warrants | 3 |  | 6 |  | (3) |  |  |  |
Amortization of restricted stock units | 8,914 |  |  |  | 8,914 |  |  |  |
Cash paid to noncontrolling interests | (2,000) |  |  |  | (1,126) |  |  |  | (874)
Balance at Dec. 31, 2018 | 1,144,923 |  | $ 37 |  | $ 1,352,388 |  | $ (210,783) | $ 2,194 | $ 1,087
Balance at Dec. 31, 2018 | $ 1,087 |  |  |  |  |  |  |  |

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