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Intangibles - Intangibles Lease Assets (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Intangibles [Abstract]    
Gross intangible lease assets $ 794,423 $ 761,328
Accumulated depreciation and amortization (282,811) (241,411)
Intangible assets, net $ 511,612 $ 519,917
Weighted average remaining amortization period in years 6 years 5 years