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SCHEDULE III Real Estate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]    
Real Estate gross carrying value at beginning of year $ 22,717 $ 22,717
Sale of real estate, deductions 22,717 0
Real Estate gross carrying value at end of year $ 22,717 $ 22,717