U.K. Pension Plan (Tables)

6 Months Ended

Jun. 30, 2016

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Net Benefit Costs

The following table summarizes the components of the Pension Program related to the net benefit costs recognized in labor and benefits in the Company's consolidated statement of operations for the three and six months ended June 30, 2016 and 2015 (dollars in thousands):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2016			2015			2016			2015
Service cost	$	3,436		$	3,565		$	6,863		$	3,775
Interest cost	3,197			2,539			6,385			2,688
Expected return on plan assets	(4,085		)	(3,964		)	(8,159		)	(4,197		)
Net periodic benefit cost	$	2,548		$	2,140		$	5,089		$	2,266