Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Supplemental cash flow information

Supplemental cash flow information was as follows:

	Six months ended June 30,
	2017		2016
	(In thousands)
Interest paid	$	66,188	71,141
Income taxes paid	9,086		10,233
Changes in accounts payable related to purchases of revenue earning equipment	77,717		(105,480	)
Operating and revenue earning equipment acquired under capital leases	3,424		777