Defined benefit pension obligation (Tables)

6 Months Ended

Jun. 30, 2017

Defined benefit pension obligation

Schedule of net periodic benefit cost

The net periodic benefit cost was as follows (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Service cost	$	680	$	120	$	1,296	$	120
Interest cost		52		10		98		10
Expected return on plan assets		(38)		(8)		(73)		(8)
Amortization of prior service cost		13		18		25		18
Amortization of actuarial losses		34		—		68		—
Net periodic benefit cost	$	741	$	140	$	1,414	$	140