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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)
Other comprehensive income         0
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, 2020 418 1,713,406   (968,830) 744,994
Increase (Decrease) in Shareholders' Equity          
Net income (loss)       1,985 1,985
Other comprehensive income     $ 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