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Note 7 - Lease Obligations - Future Minimum Annual Payments Under Operating Leases (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
Sublease rental income, 2020 $ (422)
Total operating leases, 2020 42,305
Sublease rental income, 2021 (418)
Total operating leases, 2021 42,124
Sublease rental income, 2022 (424)
Total operating leases, 2022 41,713
Sublease rental income, 2023 (413)
Total operating leases, 2023 40,818
Sublease rental income, 2024 (257)
Total operating leases, 2024 38,811
Sublease rental income, thereafter (772)
Total operating leases, thereafter 263,376
Sublease rental income, total payments (2,706)
Total operating leases, total payments 469,147
Related Parties [Member]  
2020 1,081
2021 1,058
2022 1,056
2023 1,056
2024 1,056
Thereafter 2,062
Total payments 7,369
Third Parties [Member]  
2020 41,646
2021 41,484
2022 41,081
2023 40,175
2024 38,012
Thereafter 262,086
Total payments $ 464,484