Consolidated Condensed Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Stock |
Balance at period start (shares) at Dec. 31, 2018 | | 31,299 | | | | |
Balance at period start at Dec. 31, 2018 | $ 662,270 | $ 313 | $ 341,738 | $ 464,851 | $ (55,737) | $ (88,895) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Common stock issued under employee plans | 1,748 | | (769) | | | 2,517 |
Stock-based compensation | 2,703 | | 2,703 | | | |
Dividends on common stock ($0.20 per share) | (5,643) | | | (5,643) | | |
Convertible notes discount (net of income tax expense) | 39,145 | | 39,145 | | | |
Convertible notes hedge, (net of income tax benefit) | (38,829) | | (38,829) | | | |
Issuance of warrants | 30,567 | | 30,567 | | | |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | | | | | (578) | |
Pension liability, net of income tax | | | | | 547 | |
Cash flow hedging gain (loss), net of income tax | | | | | 106 | |
Net income (loss) | | | | 1,021 | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 1,096 | | | | | |
Balance at period end (shares) at Mar. 31, 2019 | | 31,299 | | | | |
Balance at period end at Mar. 31, 2019 | 693,057 | $ 313 | 374,555 | 460,229 | (55,662) | (86,378) |
Balance at period start (shares) at Dec. 31, 2018 | | 31,299 | | | | |
Balance at period start at Dec. 31, 2018 | 662,270 | $ 313 | 341,738 | 464,851 | (55,737) | (88,895) |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | (4,240) | | | | | |
Pension liability, net of income tax | 1,639 | | | | | |
Cash flow hedging gain (loss), net of income tax | 423 | | | | | |
Net income (loss) | 13,686 | | | | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 11,508 | | | | | |
Balance at period end (shares) at Sep. 30, 2019 | | 31,299 | | | | |
Balance at period end at Sep. 30, 2019 | 700,922 | $ 313 | 379,137 | 461,564 | (57,915) | (82,177) |
Balance at period start (shares) at Mar. 31, 2019 | | 31,299 | | | | |
Balance at period start at Mar. 31, 2019 | 693,057 | $ 313 | 374,555 | 460,229 | (55,662) | (86,378) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Common stock issued under employee plans | 750 | | (1,144) | | | 1,894 |
Stock-based compensation | 3,108 | | 3,108 | | | |
Dividends on common stock ($0.20 per share) | (5,657) | | | (5,657) | | |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | | | | | 1,108 | |
Pension liability, net of income tax | | | | | 546 | |
Cash flow hedging gain (loss), net of income tax | | | | | (1,598) | |
Net income (loss) | | | | 5,695 | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 5,751 | | | | | |
Balance at period end (shares) at Jun. 30, 2019 | | 31,299 | | | | |
Balance at period end at Jun. 30, 2019 | 697,009 | $ 313 | 376,519 | 460,267 | (55,606) | (84,484) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Common stock issued under employee plans | 1,917 | | (390) | | | 2,307 |
Stock-based compensation | 3,008 | | 3,008 | | | |
Dividends on common stock ($0.20 per share) | (5,673) | | | (5,673) | | |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | (4,770) | | | | (4,770) | |
Pension liability, net of income tax | 546 | | | | 546 | |
Cash flow hedging gain (loss), net of income tax | 1,915 | | | | 1,915 | |
Net income (loss) | 6,970 | | | 6,970 | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 4,661 | | | | | |
Balance at period end (shares) at Sep. 30, 2019 | | 31,299 | | | | |
Balance at period end at Sep. 30, 2019 | 700,922 | $ 313 | 379,137 | 461,564 | (57,915) | (82,177) |
Balance at period start (shares) at Dec. 31, 2019 | | 31,299 | | | | |
Balance at period start at Dec. 31, 2019 | 710,467 | $ 313 | 379,324 | 470,844 | (59,277) | (80,737) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Common stock issued under employee plans | (5,040) | | (7,736) | | | 2,696 |
Stock-based compensation | 3,032 | | 3,032 | | | |
Dividends on common stock ($0.20 per share) | (5,703) | | | (5,703) | | |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | | | | | (9,988) | |
Pension liability, net of income tax | | | | | 535 | |
Cash flow hedging gain (loss), net of income tax | | | | | 2,405 | |
Net income (loss) | | | | 5,927 | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | (1,121) | | | | | |
Balance at period end (shares) at Mar. 31, 2020 | | 31,299 | | | | |
Balance at period end at Mar. 31, 2020 | 701,635 | $ 313 | 374,620 | 471,068 | (66,325) | (78,041) |
Balance at period start (shares) at Dec. 31, 2019 | | 31,299 | | | | |
Balance at period start at Dec. 31, 2019 | 710,467 | $ 313 | 379,324 | 470,844 | (59,277) | (80,737) |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | (790) | | | | | |
Pension liability, net of income tax | 1,605 | | | | | |
Cash flow hedging gain (loss), net of income tax | (3,050) | | | | | |
Net income (loss) | (14,623) | | | | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | (16,858) | | | | | |
Balance at period end (shares) at Sep. 30, 2020 | | 31,299 | | | | |
Balance at period end at Sep. 30, 2020 | 683,141 | $ 313 | 381,119 | 439,086 | (61,512) | (75,865) |
Balance at period start (shares) at Mar. 31, 2020 | | 31,299 | | | | |
Balance at period start at Mar. 31, 2020 | 701,635 | $ 313 | 374,620 | 471,068 | (66,325) | (78,041) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Common stock issued under employee plans | 133 | | (1,150) | | | 1,283 |
Stock-based compensation | 3,555 | | 3,555 | | | |
Dividends on common stock ($0.20 per share) | (5,712) | | | (5,712) | | |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | | | | | 4,581 | |
Pension liability, net of income tax | | | | | 535 | |
Cash flow hedging gain (loss), net of income tax | | | | | (2,429) | |
Net income (loss) | | | | (27,400) | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | (24,713) | | | | | |
Balance at period end (shares) at Jun. 30, 2020 | | 31,299 | | | | |
Balance at period end at Jun. 30, 2020 | 674,898 | $ 313 | 377,025 | 437,956 | (63,638) | (76,758) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | |
Common stock issued under employee plans | 1,455 | | 562 | | | 893 |
Stock-based compensation | 3,532 | | 3,532 | | | |
Dividends on common stock ($0.20 per share) | (5,720) | | | (5,720) | | |
Comprehensive income (loss): | | | | | | |
Foreign currency translation adjustments | 4,617 | | | | 4,617 | |
Pension liability, net of income tax | 535 | | | | 535 | |
Cash flow hedging gain (loss), net of income tax | (3,026) | | | | (3,026) | |
Net income (loss) | 6,850 | | | 6,850 | | |
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | 8,976 | | | | | |
Balance at period end (shares) at Sep. 30, 2020 | | 31,299 | | | | |
Balance at period end at Sep. 30, 2020 | $ 683,141 | $ 313 | $ 381,119 | $ 439,086 | $ (61,512) | $ (75,865) |