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NOTES PAYABLE TO BANKS (Tables)
6 Months Ended
Jun. 30, 2018
NOTES PAYABLE TO BANKS  
Schedule of interest incurred on unused portion of credit facility and amortization of loan costs
    Three months ended
June 30,
    Six months ended
June 30,
 
(in thousands)   2018     2017     2018     2017  
Interest incurred   $ 103     $ 104     $ 206     $ 207