Japan pension plans (Tables)

9 Months Ended

Sep. 30, 2015

Compensation And Retirement Disclosure [Abstract]

Periodic Pension Cost

Net periodic pension cost associated with these plans included the following components (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2015		2014		2015		2014
Service cost	$	—	$	—	$	—	$	53
Interest cost		—		—		—		13
Amortization		—		—		—		1
Net periodic pension costs	$	—	$	—	$	—	$	67