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Leases (Amounts Reported in Condensed Consolidated Balance Sheets for Operating Leases) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease assets, net $ 37,991 $ 21,111
Short-term operating lease liabilities (in accrued expenses) $ 9,283 $ 7,234
Operating lease, liability, current, statement of financial position [Extensible List] us-gaap:AccruedLiabilitiesCurrent us-gaap:AccruedLiabilitiesCurrent
Long-term operating lease liabilities $ 35,516 $ 14,301
Total operating lease liabilities $ 44,799 $ 21,535