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INCOME TAXES - Effective tax rate - (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Effective income tax rate differs from the statutory rate |  |  |
U.S. statutory rate (as a percent) | 21.00% | 21.00% | 21.00%
State income taxes, net (as a percent) | 2.40% | 2.10% | 2.20%
Exempt municipal bond interest (as a percent) |  |  | (0.10%)
Foreign income tax rates (as a percent) | 0.20% | 1.00% | (0.10%)
Income tax credits and adjustments (as a percent) | (0.60%) | (1.40%) | 0.50%
Adjustment of deferred tax balances (as a percent) | 0.60% | (0.20%) |
Reserve for uncertain tax benefits (as a percent) |  | (0.80%) | 0.40%
Other, net (as a percent) | 0.20% | 1.00% | 0.20%
Effective income tax rate (as a percent) | 23.80% | 22.70% | 24.10%
Unrecognized tax benefits | $ 3,133 | $ 3,011 | $ 3,678
Portion of unrecognized tax benefits that, if recognized, would favorably affect annual effective income tax rate | 1,547 | 1,468 |
Interest and penalties included in liability for uncertain tax positions | 282 | 340 |
Reconciliation of the beginning and ending balances of the total amounts of unrecognized tax benefits |  |  |
Unrecognized tax benefits at the beginning of the period | 3,011 | 3,678 | 3,339
Increases in tax positions for the current year | 700 | 377 | 1,164
Reductions in tax positions for lapse of statute of limitations | (578) | (501) | (576)
Reductions in tax positions for settlements and payments |  | (308) | (249)
Increases (decreases) in prior period unrecognized tax benefits due to change in judgment |  | (235) |
Unrecognized tax benefits at the end of the period | 3,133 | $ 3,011 | $ 3,678
Spain |  |  |
Effective income tax rate differs from the statutory rate |  |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2026 | 286 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2027 | 61 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2028 | 182 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2029 | 103 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2030 | 314 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2031 | 418 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2032 | 315 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2033 | 127 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2034 | 440 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2035 | 556 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2036 | 805 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2037 | 412 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2038 | 197 |  |
Tax benefits of foreign subsidiary tax loss carry forwards expiring in 2039 | $ 160 |  |

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- Definition The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a country outside the country of domicile in the current year, but can be carried forward to reduce taxable income or income taxes payable up to 2026, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. + References No definition available. + Details
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- Definition The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a country outside the country of domicile in the current year, but can be carried forward to reduce taxable income or income taxes payable up to 2027, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. + References No definition available. + Details
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- Definition The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of a country outside the country of domicile in the current year, but can be carried forward to reduce taxable income or income taxes payable up to 2028, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset. + References No definition available. + Details
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