SUPPLEMENTAL INFORMATION FOR STATEMENTS OF CASH FLOWS (Tables)
|12 Months Ended|
Dec. 31, 2017
|Supplemental Cash Flow Elements [Abstract]|
|Schedule of Supplemental Cash Flow Disclosures||
Supplemental cash flow information for the years ended December 31, 2017, 2016 and 2015 was as follows (in thousands):
Tabular disclosure of supplemental cash flow information for the periods presented.
No definition available.