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Warranty Accrual Included in Other Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Accrued Liabilities [Line Items]
Balance at beginning of period	$ 6,660us-gaap_ProductWarrantyAccrual	$ 9,786us-gaap_ProductWarrantyAccrual	$ 8,153us-gaap_ProductWarrantyAccrual
Accruals for warranties issued during the period	15,406us-gaap_ProductWarrantyAccrualWarrantiesIssued	10,574us-gaap_ProductWarrantyAccrualWarrantiesIssued	14,704us-gaap_ProductWarrantyAccrualWarrantiesIssued
Accruals related to pre-existing warranties	(2,008)us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease	(3,534)us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease	877us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Settlements made during the period	(11,116)us-gaap_ProductWarrantyAccrualPayments	(10,166)us-gaap_ProductWarrantyAccrualPayments	(13,948)us-gaap_ProductWarrantyAccrualPayments
Balance at end of period	$ 8,942us-gaap_ProductWarrantyAccrual	$ 6,660us-gaap_ProductWarrantyAccrual	$ 9,786us-gaap_ProductWarrantyAccrual

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 15

-Subparagraph 5

-Article 9



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(5))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(2))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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Balance Type:	debit
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- Definition

Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(4))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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- Definition

Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph ((c)(3))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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