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Income Taxes - Reconciliation of Income Tax Rates (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Tax Disclosure [Abstract]    
U.S. statutory federal rate 21.00% 21.00%
State and local rate, net of federal tax 4.64% 4.54%
Stock compensation (5.56%) (1.94%)
Excess compensation deduction (0.68%) (0.51%)
Foreign tax credits 0.00% 0.11%
Federal true-ups (0.10%) 0.00%
Life insurance (0.10%) (0.04%)
Net operating loss carryback 0.00% 0.56%
Paycheck Protection Program addback 0.00% 2.18%
Change in tax rate 0.06% 0.00%
Other permanent differences (0.01%) (0.01%)
Income tax benefit 19.25% 25.89%