PREPAID EXPENSES AND OTHER ASSETS (Tables)

12 Months Ended

Dec. 31, 2018

Prepaid Expense and Other Assets, Current [Abstract]

Schedule of Prepaid Expenses and Other Assets

Prepaid expenses and other assets at December 31 are summarized as follows:

	2018		2017
	(thousands of dollars)
Prepaid license	$	2,419	$	1,919
Spare parts	1,597		954
Other prepaid expenses and assets	648		772
Total	$	4,664	$	3,645