Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Significant Accounting Policies

Schedule of estimated useful lives of the related assets

Asset Classification	Estimated Useful Life
Land, buildings and equipment (under lease)		Lesser of the lease term or estimated useful life of the asset
Machinery and equipment		3 to 10 years

Schedule of components of net income per share

	Year ended December 31,
	2019		2018		2017
	(in thousands, except per share data)
Net income available to common stockholders	$	17,034	$	45,885	$	126,959
Weighted average common shares outstanding used in computing basic income per share		32,559		32,286		30,866
Incremental options and RSUs		1,269		1,716		2,570
Weighted average common shares used in computing diluted net income per share		33,828		34,002		33,436
Net income per share
Basic	$	0.52	$	1.42	$	4.11
Diluted	$	0.50	$	1.35	$	3.80

Schedule of changes in accumulated other comprehensive income, net of tax

	Foreign		Defined benefit
	currency		pension plan		Total
	(in thousands)
Balance at December 31, 2018	$	962	$	(514)	$	448
Other comprehensive loss and pension reclassification		(444)		(262)		(706)
Balance at December 31, 2019	$	518	$	(776)	$	(258)