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Income Taxes - Reconciliation of the Beginning and Ending Balances of our Liability for Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Unrecognized tax benefits      
Balance, beginning of year $ 1,393 $ 1,540 $ 1,668
Additions related to prior acquisitions 1,508 160  
Lapse of statute of limitations (151) (313) (420)
Additions for tax positions of prior years 36 111 322
Reductions for tax positions of prior years (62) (105) (30)
Additions for tax positions of current year 205    
Balance, end of year $ 2,929 $ 1,393 $ 1,540