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Leases (Lease Cost) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Operating lease expense $ 1,425,000 $ 905,000 $ 3,577,000 $ 3,421,000
Sublease income (66,000) (42,000) (190,000) (118,000)
Net lease expense 1,359,000 863,000 3,387,000 3,303,000
Short-term lease costs 0 0 0 0
Rental income from owned properties $ 600,000 $ 700,000 $ 1,800,000 $ 1,900,000