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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Summary of income from commercial rents included in real estate revenue The following is a summary of income from commercial rents included in commercial/industrial real estate revenues as of December 31:
($ in thousands)202120202019
Base rent$6,672 $6,471 $6,554 
Percentage rent$705 $949 $1,024 
Schedule of future minimum rental income
Future minimum rental income on commercial, communication and right-of-way on non-cancelable leases as of December 31, 2021 ($ in thousands):
20222023202420252026Thereafter
$6,375 $5,565 $5,435 $5,241 $4,603 $12,706