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Note 10 - Leases - Rental Income (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Minimum rental payments $ 54,149 $ 51,512 $ 106,570 $ 102,414
Nonlease payments 7,620 7,753 14,878 14,718
Total $ 61,769 $ 59,265 $ 121,448 $ 117,132