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Consolidated Statements of Equity - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive (Loss) Income | Accumulated Deficit | Total
--- | --- | --- | --- | --- | ---
Balance at the beginning at Dec. 31, 2019 | $ 417 | $ 1,721,268 |  | $ (743,257) | $ 978,428
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income (loss) |  |  |  | (120,350) | (120,350)
Issuance of shares due to vesting of RSUs, net of forfeitures | 1 | (1) |  |  |
Cash dividends declared |  | (7,363) |  |  | (7,363)
Nonvested stock amortization |  | 481 |  |  | 481
Balance at the end at Mar. 31, 2020 | 418 | 1,714,385 |  | (863,607) | 851,196
Balance at the beginning at Dec. 31, 2019 | 417 | 1,721,268 |  | (743,257) | 978,428
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  | 0
Balance at the end at Jun. 30, 2020 | 418 | 1,714,019 |  | (881,811) | 832,626
Balance at the beginning at Mar. 31, 2020 | 418 | 1,714,385 |  | (863,607) | 851,196
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income (loss) |  |  |  | (18,204) | (18,204)
Other comprehensive income (loss) |  |  |  |  | 0
Cash dividends declared |  | (842) |  |  | (842)
Nonvested stock amortization |  | 476 |  |  | 476
Balance at the end at Jun. 30, 2020 | 418 | 1,714,019 |  | (881,811) | 832,626
Balance at the beginning at Dec. 31, 2020 | 418 | 1,713,406 |  | (968,830) | 744,994
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income (loss) |  |  |  | 1,985 | 1,985
Other comprehensive income (loss) |  |  | $ 161 |  | 161
Issuance of shares due to vesting of RSUs and exercise of options | 1 | (1) |  |  |
Cash dividends declared |  | (845) |  |  | (845)
Nonvested stock amortization |  | 522 |  |  | 522
Balance at the end at Mar. 31, 2021 | 419 | 1,713,082 | 161 | (966,845) | 746,817
Balance at the beginning at Dec. 31, 2020 | 418 | 1,713,406 |  | (968,830) | 744,994
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  | 138
Balance at the end at Jun. 30, 2021 | 419 | 1,711,523 | 138 | (934,808) | 777,272
Balance at the beginning at Mar. 31, 2021 | 419 | 1,713,082 | 161 | (966,845) | 746,817
Increase (Decrease) in Shareholders' Equity |  |  |  |  |
Net income (loss) |  |  |  | 32,037 | 32,037
Other comprehensive income (loss) |  |  | (23) |  | (23)
Cash dividends declared |  | (2,110) |  |  | (2,110)
Nonvested stock amortization |  | 551 |  |  | 551
Balance at the end at Jun. 30, 2021 | $ 419 | $ 1,711,523 | $ 138 | $ (934,808) | $ 777,272

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