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Commitments, contingencies and guarantees (Tables)

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability Activity

The following table summarizes the warranty liability activity:

	Three months ended								Nine months ended
(in thousands)	September 30, 2016				September 30, 2015				September 30, 2016				September 30, 2015
Beginning balances	$	8,939			$	8,719			$	10,855			$	6,405
Charged to cost of revenue	4,485				6,515				13,026				18,335
Settlements of warranty claims	(4,068		)		(5,809		)		(14,525		)		(15,315		)
Ending balances	$	9,356			$	9,425			$	9,356			$	9,425

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- Definition

Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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