Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details)

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Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
Unrecognized tax benefits that would affect the effective tax rate $ 12,900,000 $ 13,600,000 $ 11,500,000
Balance at beginning of period 14,493,000 12,478,000 11,064,000
Increases related to prior year tax positions 355,000 1,903,000 4,374,000
Decreases related to prior year tax positions (1,447,000) (162,000) (5,423,000)
Increases related to current year tax positions 883,000 906,000 4,991,000
Expiration of statute of limitations (429,000) (632,000) (1,064,000)
Balance at end of period $ 13,855,000 $ 14,493,000 $ 12,478,000