Impairment indicators.

No definition available.

Name:	pgti_ImpairmentIndicators
Namespace Prefix:	pgti_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Indefinite lived intangible assets excess of fair value over book value percentage.

+ References

No definition available.

+ Details

Name:	pgti_IndefiniteLivedIntangibleAssetsExcessOfFairValueOverBookValuePercentage
Namespace Prefix:	pgti_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average discount rate.

+ References

No definition available.

+ Details

Name:	pgti_WeightedAverageDiscountRate
Namespace Prefix:	pgti_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average royalty rate.

+ References

No definition available.

+ Details

Name:	pgti_WeightedAverageRoyaltyRate
Namespace Prefix:	pgti_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275

+ Details

Name:	us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date of rights not otherwise specified in the taxonomy having a projected indefinite period of benefit.

+ References

+ Details

Name:	us-gaap_OtherIndefiniteLivedIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Other Intangible Assets - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Dec. 28, 2013 Indicator	Dec. 28, 2013 Indicator	Dec. 29, 2012 Indicator	Dec. 31, 2011
Indefinite-lived Intangible Assets [Line Items]
Impairment charges		$ 0	$ 0	$ 0
Weighted average royalty rate	4.00%
Weighted average discount rate	16.10%	16.10%
Impairment indicators	0	0	0
Trade Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment charges				6,000,000
Intangible assets not subject to amortization	38,441,000	38,441,000	38,441,000	38,400,000
Trade Names [Member] \| Changes Measurement [Member]
Indefinite-lived Intangible Assets [Line Items]
Excess of estimated fair value of trade names over book values in percentage	79.00%
Excess of estimated fair value of trade names over book values	$ 30,300,000