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Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands | Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interest [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | AOCI Attributable to Parent [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2019 |  |  |  |  |  | 39,845,211 |  |  |  |  |
Balance at Dec. 31, 2019 | $ 0 | $ (2,824) | $ 0 | $ 0 | $ (2,824) | $ 442,153 | $ 60,706 | $ 77,181 | $ (67,164) | $ 4,423 | $ 517,299
Net earnings (loss) |  |  |  |  |  |  | 0 | 94,489 | 0 | 0 | 94,489
Pension liability adjustments, net of tax |  |  |  |  |  |  | 0 | 0 | (753) | 0 | (753)
Foreign currency translation gain (loss) |  |  |  |  |  |  | 0 | 0 | 2,591 | 0 | 2,591
Unrealized gain (loss) on interest rate swaps, net of tax |  |  |  |  |  |  | 0 | 0 | (2,448) | 0 | (2,448)
Other comprehensive earnings (loss) attributable to NCI |  |  |  |  |  | $ 0 | 0 | 0 | 5,795 | (154) | 5,641
NCI share of earnings |  |  |  |  |  |  | 0 | (29,572) | 0 | 2,023 | (27,549)
NCI redemption increment |  |  |  |  |  |  | 0 | (15,843) | 0 | 0 | (15,843)
Distributions to NCI |  |  |  |  |  |  | 0 | 0 | 0 | (2,524) | (2,524)
Acquisitions of businesses, net |  |  |  |  |  |  | 0 | 0 | 0 | (65) | (65)
Subsidiaries’ equity transactions |  |  |  |  |  |  | 134 | 0 | 0 | 0 | 134
Stock option expense |  |  |  |  |  |  | 9,628 | 0 | 0 | 0 | $ 9,628
Stock options exercised (in shares) |  |  |  |  |  | 344,225 |  |  |  |  | 344,225
Stock options exercised |  |  |  |  |  | $ 15,840 | (3,497) | 0 | 0 | 0 | $ 12,343
Dividends |  |  |  |  |  |  | 0 | (4,010) | 0 | 0 | (4,010)
Balance (in shares) at Dec. 31, 2020 |  |  |  |  |  | 40,189,436 |  |  |  |  |
Balance at Dec. 31, 2020 |  |  |  |  |  | $ 457,993 | 66,971 | 119,421 | (61,979) | 3,703 | 586,109
Net earnings (loss) |  |  |  |  |  |  | 0 | (237,557) | 0 | 0 | (237,557)
Pension liability adjustments, net of tax |  |  |  |  |  |  | 0 | 0 | (541) | 0 | (541)
Foreign currency translation gain (loss) |  |  |  |  |  |  | 0 | 0 | (11,662) | 0 | (11,662)
Unrealized gain (loss) on interest rate swaps, net of tax |  |  |  |  |  |  | 0 | 0 | 4,319 | 0 | 4,319
Other comprehensive earnings (loss) attributable to NCI |  |  |  |  |  |  | 0 | 0 | (388) | (245) | (633)
NCI share of earnings |  |  |  |  |  |  | 0 | (53,465) | 0 | 2,726 | (50,739)
NCI redemption increment |  |  |  |  |  |  | 0 | (99,316) | 0 | 0 | (99,316)
Distributions to NCI |  |  |  |  |  |  | 0 | 0 | 0 | (2,472) | (2,472)
Acquisitions of businesses, net |  |  |  |  |  |  | 0 | 0 | 0 | (42) | (42)
Subsidiaries’ equity transactions |  |  |  |  |  |  | 2,078 | 0 | 0 | 0 | 2,078
Stock option expense |  |  |  |  |  |  | 14,349 | 0 | 0 | 0 | $ 14,349
Stock options exercised (in shares) |  |  |  |  |  | 292,450 |  |  |  |  | 292,450
Stock options exercised |  |  |  |  |  | $ 18,432 | (3,991) | 0 | 0 | 0 | $ 14,441
Dividends |  |  |  |  |  |  | 0 | (8,807) | 0 | 0 | (8,807)
Settlement of LTIA (note 21) (in shares) |  |  |  |  |  | 3,572,858 |  |  |  |  |
Settlement of LTIA (note 21) |  |  |  |  |  | $ 375,742 | 0 | 0 | 0 | 0 | 375,742
Balance (in shares) at Dec. 31, 2021 |  |  |  |  |  | 44,054,744 |  |  |  |  |
Balance at Dec. 31, 2021 |  |  |  |  |  | $ 852,167 | $ 79,407 | $ (279,724) | $ (70,251) | $ 3,670 | $ 585,269

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