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NOTES AND BONDS PAYABLE (Schedule of Maturities of Long-term Debt) (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Notes and Bonds Payable [Abstract]  
2018 $ 117,537
2019 57,649
2020 190,774
2021 56,639
2022 127,925
Thereafter 61,170
Notes and bond payable outstanding $ 611,694