Accrued Liabilities and Other Long-Term Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Accrued Liabilities Current And Noncurrent [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities and other current liabilities at December 31 were:

	2016		2015
Accrued expenses	$	33,947	$	34,108
Compensation and payroll taxes		23,720		23,867
Equipment purchases		6,377		13,060
Accrued pricing adjustments		3,817		3,767
Accrued professional services		2,645		2,082
Other		1,056		917
	$	71,562	$	77,801

Schedule of Other Long-Term Liabilities

Other long-term liabilities at December 31 were:

	2016		2015
Accrued defined benefit plan	$	30,515	$	30,406
Unrecognized tax benefits		15,340		20,933
Deferred grant and subsidy		18,259		20,361
Income tax contingencies		8,163		10,782
Deferred compensation		6,433		5,600
Other		2,663		2,071
	$	81,373	$	90,153