Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Summary of Significant Accounting Policies

Schedule of estimated useful lives of the related assets

Asset Classification	Estimated Useful Life
Land and buildings (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 loss per share

	Years Ended December 31,
	2015		2014			2013
	(in thousands, except per share data)
Net income (loss) available to common stockholders	$	14,678	$	(11,266	)	$	(17,144	)
Weighted average common shares outstanding used in computing basic net income (loss) per share		114,378		111,450			108,869
Incremental shares		6,538		—			—
Weighted average common shares outstanding used in computing diluted net income (loss) per share		120,916		111,450			108,869
Net income (loss) per share
Basic	$	0.13	$	(0.10	)	$	(0.16	)
Diluted	$	0.12	$	(0.10	)	$	(0.16	)

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

	Foreign currency			Defined benefit pension plan			Total
	(in thousands)
Balance at December 31, 2014	$	1,920		$	(644	)	$	1,276
Other comprehensive loss		(2,664	)		(43	)		(2,707	)
Balance at December 31, 2015	$	(744	)	$	(687	)	$	(1,431	)