Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Details Textual)

v3.10.0.1
FAIR VALUE MEASUREMENTS (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Debt Instrument, Face Amount $ 245,000   $ 245,000  
Debt Instrument, Fair Value Disclosure 223,600   223,600  
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property $ (5,154) $ 510 (5,159) $ 505
KGBIFM [Member]        
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property     $ 4,800