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INCOME TAXES (Tables)
12 Months Ended
Dec. 31, 2022
Income Tax Disclosure [Abstract]  
Components of Income before Income Taxes The components of income before income taxes and equity in (losses) earnings are as follows:
 Year Ended December 31,
 202220212020
 (in thousands)
Domestic$20,796 $61,045 $18,012 
Foreign(11,767)(24,665)(12,463)
Total income before income taxes and equity in earnings
$9,029 $36,380 $5,549 
Provision for Income Taxes The provision for income taxes (before equity in (losses) earnings) consists of:
Year Ended December 31,
202220212020
(in thousands)
Current:
Federal$6,890 $10,361 $8,522 
State and local1,888 3,558 2,540 
Foreign775 823 665 
Deferred(3,825)1,799 (1,861)
Income tax provision
$5,728 $16,541 $9,866 
Significant Components of Net Deferred Income Tax Asset (Liability) Significant components of the Company’s deferred income tax assets and (liabilities) are as follows:
 December 31,
 20222021
 (in thousands)
Deferred income tax assets:
Operating lease liabilities$22,814 $26,158 
Stock options1,679 1,825 
Inventory3,134 2,612 
Operating loss carryforwards17,450 15,684 
Accounts receivable allowances1,906 1,696 
Accrued compensation1,137 1,310 
Deferred compensation721 1,167 
Environmental remediation accrual1,432 127 
Capitalized research and experimental expenditures2,525 — 
Other755 1,409 
Total deferred income tax assets$53,553 $51,988 
Deferred income tax liabilities:
Operating lease right-of-use assets$(18,872)$(21,857)
Fixed assets(1,735)(1,784)
Intangibles(26,230)(26,117)
Total deferred income tax liabilities(46,837)(49,758)
Net deferred income tax asset
6,716 2,230 
Valuation allowance(16,323)(15,072)
Net deferred income tax liability
$(9,607)$(12,842)
Difference between Provision for Income Taxes and Amount Computed by Applying Federal Statutory Rates The provision for income taxes (before equity in (losses) earnings) differs from the amounts computed by applying the applicable federal statutory rates as follows:
 Year Ended December 31,
 202220212020
Federal income taxes at the statutory rate21.0 %21.0 %21.0 %
Increases (decreases):
State and local income taxes, net of Federal income tax benefit13.9 8.8 38.9 
Foreign rate differences6.9 (9.2)(49.8)
Foreign withholding tax6.1 1.2 5.9 
Impairment of goodwill — — 65.5 
Non-deductible expenses7.1 3.3 16.4 
Uncertain tax positions1.2 0.1 4.0 
Research and development credit(5.4)(1.1)(7.2)
Federal return to provision(3.4)(0.4)6.8 
Loss of Filament pre-acquisition attributes due to CARES Act— — 8.6 
 Equity-based compensation0.1 (0.6)19.4 
Valuation Allowance15.9 22.4 48.3 
Provision for income taxes63.4 %45.5 %177.8 %
Estimated Values of Gross Uncertain Tax Positions The estimated values of the Company’s gross uncertain tax positions at December 31, 2022, 2021 and 2020 consist of the following:
Year Ended December 31,
202220212020
(in thousands)
Balance at January 1$(1,071)$(1,648)$(1,508)
Additions based on tax positions related to the current year(79)(49)(149)
Reductions for tax position of prior years20 626 
Balance at December 31$(1,130)$(1,071)$(1,648)