U.K. Pension Plan (Tables)

3 Months Ended

Mar. 31, 2017

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [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 in the Company's consolidated statements of operations for the three months ended March 31, 2017 and 2016 (amounts in thousands):

	Three Months Ended March 31,
	2017						2016
	GBP			USD			GBP			USD
Service cost	£	2,988		$	3,688		£	2,395		$	3,427
Interest cost	1,978			2,441			2,227			3,188
Expected return on plan assets	(3,307		)	(4,082		)	(2,847		)	(4,074		)
Net periodic benefit cost	£	1,659		$	2,047		£	1,775		$	2,541