FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2014

FAIR VALUE OF FINANCIAL INSTRUMENTS

Schedule of fair value of long-term debt, including current maturities, and advances for construction

	December 31, 2014
			Fair Value
	Cost		Level 1		Level 2		Level 3		Total
Long-term debt, including current maturities	$	425,840	$	—	$	534,068	$	—	$	534,068
Advances for construction		182,284		—		72,571		—		72,571
Total	$	608,124	$	—	$	606,639	$	—	$	606,639

	December 31, 2013
			Fair Value
	Cost		Level 1		Level 2		Level 3		Total
Long-term debt, including current maturities	$	434,050	$	—	$	511,146	$	—	$	511,146
Advances for construction		183,393		—		73,389		—		73,389
Total	$	617,443	$	—	$	584,535	$	—	$	584,535