Annual report pursuant to Section 13 and 15(d)

REVOLVING CREDIT FACILITY (Details)

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REVOLVING CREDIT FACILITY (Details) - Revolving credit agreement - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Long-term debt    
Maximum borrowing capacity $ 25,000,000  
Effective rate (as a percent) 1.75% 1.50%
Annual commitment fee (as a percent) 0.25%  
Outstanding balance $ 2,700,000 $ 0
LIBOR    
Long-term debt    
Margin on variable rate (as a percent) 1.25%