COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2015

COMMITMENTS AND CONTINGENCIES [Abstract]

Future Minimum Property and Equipment Lease Payments under the Non-cancelable Operating Leases

Future minimum property and equipment lease payments under the non-cancelable operating leases at December 31, 2015, are as follows:

Year Ending December 31,	Long-Term Debt
	(thousands of dollars)
2016	$	3,309
2017		2,540
2018		2,127
2019		1,976
2020		1,829
Thereafter		2,065
Total	$	13,846