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INCOME TAXES
3 Months Ended
Mar. 31, 2018
INCOME TAXES [Abstract]  
INCOME TAXES
17.   INCOME TAXES

During the three months ended March 31, 2018 and 2017, the Company's consolidated effective tax rates were 23.7% and 38.2%, respectively. The lower effective tax rate during the three months ended March 31, 2018 compared to March 31, 2017 was the result of the Tax Act, which took effect January 1, 2018, and reduced the corporate federal tax rate from a maximum rate of 35% to a flat rate of 21%.  There were no other significant unusual income tax items during the three-month periods ended either March 31, 2018 or 2017.