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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional paid-in capital [Member] | Retained earnings [Member] | Treasury stock [Member] | Accumulated other comprehensive income (loss) [Member] | Parent [Member] | Noncontrolling interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, Beginning (in shares) at Dec. 31, 2018 |  | 59,916,973 |  |  |  |  |  |
Balance, Beginning at Dec. 31, 2018 | $ (270,097) |  | $ (519,498) | $ 29,048 | $ 7,831 | $ 203,571 | $ (279,048) | $ 8,951
Net (loss) income | 1,007 |  |  | 1,977 |  |  | 1,977 |
Currency translation adjustment, net | (4,379) |  |  |  |  | (5,281) | (5,281) | 474
Temporary Equity, Foreign Currency Translation Adjustments | (4,807) |  |  |  |  |  |  |
Pension liability adjustments, net of tax | 466 |  |  |  |  | (466) | 466 |
Dividends declared | (301) |  |  | (301) |  |  | (301) |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | (587) |  |  | 4,346 |  | (4,933) | (587) |
Noncontrolling Interest, Period Increase (Decrease) | 24,882 |  | 9,437 |  |  |  | 9,437 | 15,445
Redemption value adjustment | 776 |  | 776 |  |  |  | (776) |
Stock-based compensation | 269 |  | 269 |  |  |  | 269 |
VIE distributions | (1,054) |  |  |  |  |  | 0 | (1,054)
Issuance of stock under 401(k) plan |  | 29,414 |  |  |  |  |  |
Issuance of stock under 401(k) plan | (141) |  | 123 |  | (264) |  | (141) |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | 1,341 |  |  |  |  |  |  | (636)
Balance, Ending (in shares) at Mar. 31, 2019 |  | 59,946,387 |  |  |  |  |  |
Balance, Ending at Mar. 31, 2019 | (289,671) |  | (528,305) | 23,026 | 7,567 | 213,319 | (284,393) | (5,278)
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest | (334) |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Noncontrolling Interest | 428 |  |  |  |  |  |  |
Balance, Beginning (in shares) at Dec. 31, 2019 |  | 60,283,212 |  |  |  |  |  |
Balance, Beginning at Dec. 31, 2019 | (238,988) |  | (532,070) | 74,334 | 4,234 | 218,651 | (234,851) | (4,137)
Net (loss) income | (27,499) |  |  | (25,486) |  |  | (25,486) |
Currency translation adjustment, net | (33,786) |  |  |  |  | (32,004) | (32,004) | (1,782)
Temporary Equity, Foreign Currency Translation Adjustments | (33,786) |  |  |  |  |  |  |
Pension liability adjustments, net of tax | 1,308 |  |  |  |  | 1,308 | 1,308 |
Dividends declared | (302) |  |  | (302) |  |  | (302) |
Redemption value adjustment | 0 |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  | 2,500 |  |  |  |  |  |
Stock-based compensation | 490 |  | 468 |  | 22 |  | 490 |
Noncontrolling Interest, Decrease from Deconsolidation | 559 |  |  |  |  |  | 0 | 559
Issuance of stock under 401(k) plan |  | 76,280 |  |  |  |  |  |
Issuance of stock under 401(k) plan | (282) |  | (282) |  |  |  | (282) |
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest | (27,499) |  |  |  |  |  |  | (2,013)
Balance, Ending (in shares) at Mar. 31, 2020 |  | 60,361,992 |  |  |  |  |  |
Balance, Ending at Mar. 31, 2020 | (178,922) |  | $ (532,820) | $ 100,122 | $ 4,212 | $ 249,347 | $ (179,139) | $ 217
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest | 0 |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Portion Attributable to Noncontrolling Interest | $ 0 |  |  |  |  |  |  |

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