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OPERATING LEASES (Future Minimum Rental Income) (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Future minimum rental income for those noncancellable operating leases that had initial lease terms in excess of one year  
2016 $ 1,750
2017 1,061
2018 833
2019 980
2020 429
Thereafter 184
Total $ 5,237