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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Thousands | Total | Common Stock Issued | Common Stock Treasury | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2018 | $ 313,376 | $ 141,842 | $ (795,821) | $ 190,597 | $ 1,298,752 | $ (567,107) | $ 45,113
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 22,537 |  |  |  | 20,697 |  | 1,840
Sale of subsidiary shares to noncontrolling interest | 876 |  |  |  |  |  | 876
Total other comprehensive income (loss), net of deferred income taxes of $(1,229), $(5,267), $(1,569) and $1,729 for the three months ended June 30, and March 31, 2020 and June 30, and March 31, 2019, respectively | 4,531 |  |  |  |  | 4,111 | 420
Stock appreciation rights exercised, net | (8) | 2 | (8) | (2) |  |  |
Vesting of restricted stock units and other stock grants, net | (1,456) | 198 | (1,456) | (198) |  |  |
Vesting of performance share units, net | (8,248) | 1,136 | (8,235) | (1,149) |  |  |
Amortization of unearned portion of stock-based compensation, net of forfeitures | 3,664 |  |  | 3,664 |  |  |
Ending balance at Mar. 31, 2019 | 335,272 | 143,178 | (805,520) | 192,912 | 1,340,878 | (584,425) | 48,249
Beginning balance at Dec. 31, 2018 | 313,376 | 141,842 | (795,821) | 190,597 | 1,298,752 | (567,107) | 45,113
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 33,466 |  |  |  |  |  |
Total other comprehensive income (loss), net of deferred income taxes of $(1,229), $(5,267), $(1,569) and $1,729 for the three months ended June 30, and March 31, 2020 and June 30, and March 31, 2019, respectively | 8,129 |  |  |  |  |  |
Ending balance at Jun. 30, 2019 | 349,114 | 143,394 | (807,003) | 195,034 | 1,349,520 | (580,229) | 48,398
Beginning balance at Mar. 31, 2019 | 335,272 | 143,178 | (805,520) | 192,912 | 1,340,878 | (584,425) | 48,249
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 10,929 |  |  |  | 8,642 |  | 2,287
Total other comprehensive income (loss), net of deferred income taxes of $(1,229), $(5,267), $(1,569) and $1,729 for the three months ended June 30, and March 31, 2020 and June 30, and March 31, 2019, respectively | 3,598 |  |  |  |  | 4,196 | (598)
Stock appreciation rights exercised, net | (108) | 18 | (108) | (18) |  |  |
Vesting of performance share units, net | (1,375) | 198 | (1,375) | (198) |  |  |
Amortization of unearned portion of stock-based compensation, net of forfeitures | 2,338 |  |  | 2,338 |  |  |
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders | 4,690 |  |  |  |  |  | 4,690
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 3,150 |  |  |  |  |  | 3,150
Ending balance at Jun. 30, 2019 | 349,114 | 143,394 | (807,003) | 195,034 | 1,349,520 | (580,229) | 48,398
Beginning balance at Dec. 31, 2019 | 789,659 | 143,400 | (838,893) | 200,595 | 1,824,100 | (587,622) | 48,079
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | 1,227 |  |  |  | 141 |  | 1,086
Total other comprehensive income (loss), net of deferred income taxes of $(1,229), $(5,267), $(1,569) and $1,729 for the three months ended June 30, and March 31, 2020 and June 30, and March 31, 2019, respectively | (30,002) |  |  |  |  | (28,854) | (1,148)
Vesting of restricted stock units and other stock grants, net | (889) | 230 | (889) | (230) |  |  |
Vesting of performance share units, net | (3,205) | 589 | (3,205) | (589) |  |  |
Amortization of unearned portion of stock-based compensation, net of forfeitures | 2,080 |  |  | 2,080 |  |  |
Ending balance at Mar. 31, 2020 | 758,870 | 144,219 | (842,987) | 201,856 | 1,824,241 | (616,476) | 48,017
Beginning balance at Dec. 31, 2019 | 789,659 | 143,400 | (838,893) | 200,595 | 1,824,100 | (587,622) | 48,079
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | (8,228) |  |  |  |  |  |
Total other comprehensive income (loss), net of deferred income taxes of $(1,229), $(5,267), $(1,569) and $1,729 for the three months ended June 30, and March 31, 2020 and June 30, and March 31, 2019, respectively | (16,971) |  |  |  |  |  |
Ending balance at Jun. 30, 2020 | 764,516 | 144,245 | (843,003) | 203,916 | 1,813,639 | (603,618) | 49,337
Beginning balance at Mar. 31, 2020 | 758,870 | 144,219 | (842,987) | 201,856 | 1,824,241 | (616,476) | 48,017
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Net income (loss) | (9,455) |  |  |  | (10,602) |  | 1,147
Total other comprehensive income (loss), net of deferred income taxes of $(1,229), $(5,267), $(1,569) and $1,729 for the three months ended June 30, and March 31, 2020 and June 30, and March 31, 2019, respectively | 13,031 |  |  |  |  | 12,858 | 173
Stock appreciation rights exercised, net | (16) | 8 | (16) | (8) |  |  |
Vesting of restricted stock units and other stock grants, net | 0 | 18 | 0 | (18) |  |  |
Amortization of unearned portion of stock-based compensation, net of forfeitures | 2,086 |  |  | 2,086 |  |  |
Ending balance at Jun. 30, 2020 | $ 764,516 | $ 144,245 | $ (843,003) | $ 203,916 | $ 1,813,639 | $ (603,618) | $ 49,337

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