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11. LONG-TERM DEBT (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Long-term Debt, Description [Abstract]      
Line of Credit Facility, Maximum Borrowing Capacity $ 75.0   $ 70.0
Line of Credit Facility, Interest Rate at Period End 0.25%    
Line of Credit Facility, Interest Rate During Period 1.25%    
Libor_Loan $ 31.0 $ 35.0 $ 40.0
Long-term Line of Credit 35.6    
Line of Credit Facility, Current Borrowing Capacity $ 75.0