U.K. Pension Plan (Tables)

3 Months Ended

Mar. 31, 2018

Defined Benefit Plan [Abstract]

Schedule of Net Benefit Costs

The following tables summarize the components of the Pension Program related to the net benefit costs recognized in labor and benefits and other loss, net in the Company's consolidated statements of operations for the three months ended March 31, 2018 and 2017 (amounts in thousands):

		Three Months Ended March 31,
		2018			2017
Operating expense:
	Service cost included in labor and benefits	$	3,872		$	3,688
Nonoperating loss, net:
	Interest cost	2,556			2,441
	Expected return on plan assets	(4,905		)	(4,082		)
	Total included in other loss, net	(2,349		)	(1,641		)
Net periodic benefit cost		$	1,523		$	2,047