PGT Innovations (PGTI) 10-Q 30 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	PGTI
Entity Registrant Name	PGT Innovations, Inc.
Entity Central Index Key	1,354,327
Current Fiscal Year End Date	--12-29
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		50,730,716

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Income Statement [Abstract]
Net sales	$ 169,269	$ 137,384	$ 309,522	$ 250,105
Cost of sales	109,322	92,831	204,802	173,813
Gross profit	59,947	44,553	104,720	76,292
Selling, general and administrative expenses	32,581	24,650	61,238	47,435
Gains on transfers of assets	(2,551)		(2,551)
Income from operations	29,917	19,903	46,033	28,857
Interest expense, net	3,609	4,568	7,652	9,478
Debt extinguishment costs			3,079
Income before income taxes	26,308	15,335	35,302	19,379
Income tax expense	3,760	5,080	5,414	6,125
Net income	$ 22,548	$ 10,255	$ 29,888	$ 13,254
Net income per common share:
Basic	$ 0.45	$ 0.21	$ 0.60	$ 0.27
Diluted	$ 0.43	$ 0.20	$ 0.57	$ 0.26
Weighted average shares outstanding:
Basic	50,317	49,473	50,087	49,368
Diluted	52,056	51,664	52,023	51,607
Comprehensive income	$ 22,226	$ 10,255	$ 29,504	$ 13,254

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Current assets:
Cash and cash equivalents	$ 63,923	$ 34,029
Accounts receivable, net	74,970	60,308
Inventories	35,326	37,816
Contract assets, net	11,012
Prepaid expenses	2,757	2,490
Other current assets	7,899	9,873
Total current assets	195,887	144,516
Property, plant and equipment, net	93,433	84,133
Trade name and other intangible assets, net	111,725	115,043
Goodwill	108,060	108,060
Other assets, net	1,336	1,367
Total assets	510,441	453,119
Current liabilities:
Accounts payable and accrued liabilities	45,911	41,085
Current portion of long-term debt	303	294
Total current liabilities	46,214	41,379
Long-term debt, less current portion	215,081	212,679
Deferred income taxes	23,287	22,772
Other liabilities	17,015	964
Total liabilities	301,597	277,794
Shareholders' equity:
Preferred stock; par value $.01 per share; 10,000 shares authorized; none outstanding
Common stock; par value $.01 per share; 200,000 shares authorized; 53,371 and 52,486 shares issued and 50,706 and 49,805 shares outstanding at June 30, 2018 and December 30, 2017, respectively	533	525
Additional paid-in-capital	254,399	252,275
Accumulated other comprehensive loss	(384)
Accumulated deficit	(32,945)	(64,716)
Shareholders' equity	221,603	188,084
Less: Treasury stock at cost	(12,759)	(12,759)
Total shareholders' equity	208,844	175,325
Total liabilities and shareholders' equity	$ 510,441	$ 453,119

Condensed Consolidated Balance4

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 30, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, Shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, Shares authorized	200,000,000	200,000,000
Common stock, shares issued	53,371,000	52,486,000
Common stock, shares outstanding	50,706,000	49,805,000

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Cash flows from operating activities:
Net income	$ 29,888	$ 13,254
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,131	6,107
Amortization	3,318	3,159
Provision for allowance for doubtful accounts	412	106
Stock-based compensation	1,198	1,037
Amortization of deferred financing costs and debt discount	1,165	1,401
Debt extinguishment costs	3,079
Gains on transfers and disposals of assets	(2,609)	(57)
Change in operating assets and liabilities:
Accounts receivable	(16,826)	(16,647)
Inventories	(3,152)	(4,544)
Contract assets, net, prepaid expenses, other current and other assets	(2,092)	268
Accounts payable, accrued and other liabilities	19,362	12,933
Net cash provided by operating activities	39,874	17,017
Cash flows from investing activities:
Purchases of property, plant and equipment	(14,892)	(6,324)
Proceeds from transfers and disposals of assets	5,820	57
Net cash used in investing activities	(9,072)	(6,267)
Cash flows from financing activities:
Payments of long-term debt	(146)
Payments of financing costs	(1,687)
Taxes paid relating to shares withheld on employee equity awards	(637)	(181)
Proceeds from exercise of stock options	1,561	502
Proceeds from issuance of common stock under employee stock purchase plan	11	17
Other	(10)	(16)
Net cash (used in) provided by financing activities	(908)	322
Net increase in cash and cash equivalents	29,894	11,072
Cash and cash equivalents at beginning of period	34,029	39,210
Cash and cash equivalents at end of period	$ 63,923	$ 50,282

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	NOTE 1. BASIS OF PRESENTATION The accompanying unaudited condensed consolidated financial statements include the accounts of PGT Innovations, Inc. and its wholly-owned subsidiary, PGT Industries, Inc., and its wholly-owned subsidiaries CGI Window and Door Holdings, Inc. (“CGI”), which includes its wholly-owned subsidiary, CGI Commercial, Inc. (“CGIC”), and WinDoor, Incorporated (collectively, the “Company”), after elimination of intercompany accounts and transactions. These condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q The condensed consolidated balance sheet as of December 30, 2017, is derived from the audited consolidated financial statements, but does not include all disclosures required by GAAP. The condensed consolidated balance sheet as of December 30, 2017, and the unaudited condensed consolidated financial statements as of and for the period ended June 30, 2018, should be read in conjunction with the more detailed audited consolidated financial statements for the year ended December 30, 2017, included in the Company’s most recent Annual Report on Form 10-K. Form 10-K. Recently Adopted Accounting Pronouncements In August 2017, the FASB issued ASU 2017-12, 2017-12 2017-12 2017-12. In February 2017, the FASB issued ASU 2017-05, 2017-05 610-20, 610-20, 2014-09, non-customers. In January 2017, the FASB issued ASU 2017-01, 2017-01 2017-01 In August 2016, the FASB issued ASU 2016-15, 2016-15 Adoption of ASU 2014-09, We adopted the new revenue recognition standard on December 31, 2017 (the first day of our 2018 fiscal year) using the modified retrospective adoption methodology, whereby the cumulative impact of all prior periods is recorded in retained earnings or other impacted balance sheet line items upon adoption. Under the modified retrospective adoption method, we elected to retroactively adjust, inclusive of all previous modifications, only those contracts that were considered open at the date of initial application. Refer to Note 2, “Revenue Recognition and Contracts with Customers” for further information along with our new accounting policies. Upon adoption, we recognized a net decrease to the fiscal year 2018 opening balance of accumulated deficit of $1.9 million related to sales in excess of billings of $8.7 million, that would have been recognized as earned over time in our prior year ended December 30, 2017. The details of the adjustment to accumulated deficit upon adoption on December 31, 2017 (the first day or our 2018 fiscal year) is as follows (in thousands): Cumulative Effect Description of Effects on Line Item Net sales $ 8,704 Additional contract asset sales Cost of sales (5,642 ) Inventory classified as cost of sales SG&A expenses (532 ) Accruals for selling costs Income tax expense (647 ) Estimated income tax effects Net income $ 1,883 Additional net income The following tables reconcile the balances as presented as of and for the three months ended June 30, 2018 to the balances prior to the adjustments made to implement the new revenue recognition standard for the same period, for the accompanying condensed consolidated statement of comprehensive income, and the condensed consolidated balance sheet. The impact to the condensed consolidated statement of cash flows for the three months ended June 30, 2018 was deemed insignificant (in thousands, except per share amounts): Three Months Ended June 30, 2018 As Impact of Previous Presented ASU 2014-09 Standard Net sales $ 169,269 $ (1,987 ) $ 167,282 Cost of sales 109,322 (1,459 ) 107,863 Gross profit 59,947 (528 ) 59,419 Selling, general and administrative expenses 32,581 (100 ) 32,481 Gains on transfers of assets (2,551 ) — (2,551 ) Income from operations 29,917 (428 ) 29,489 Interest expense, net 3,609 — 3,609 Debt extinguishment costs — — — Income before income taxes 26,308 (428 ) 25,880 Income tax expense 3,760 (108 ) 3,652 Net income $ 22,548 $ (320 ) $ 22,228 Basic $ 0.45 $ 0.44 Diluted $ 0.43 $ 0.43 Comprehensive income $ 22,226 $ (320 ) $ 21,906 Six Months Ended June 30, 2018 As Impact of ASU 2014-09 Previous Net sales $ 309,522 $ (2,952 ) $ 306,570 Cost of sales 204,802 (1,886 ) 202,916 Gross profit 104,720 (1,066 ) 103,654 Selling, general and administrative expenses 61,238 (185 ) 61,053 Gains on transfers of assets (2,551 ) — (2,551 ) Income from operations 46,033 (881 ) 45,152 Interest expense, net 7,652 — 7,652 Debt extinguishment costs 3,079 — 3,079 Income before income taxes 35,302 (881 ) 34,421 Income tax expense 5,414 (225 ) 5,189 Net income $ 29,888 $ (656 ) $ 29,232 Basic $ 0.60 $ 0.58 Diluted $ 0.57 $ 0.56 Comprehensive income $ 29,504 $ (656 ) $ 28,848 At June 30, 2018 As Impact of ASU 2014-09 Previous Cash and cash equivalents $ 63,923 $ — $ 63,923 Accounts receivable, net 74,970 — 74,970 Inventories 35,326 7,528 42,854 Contract assets, net 11,012 (11,012 ) — Prepaid expenses 2,757 — 2,757 Other current assets 7,899 — 7,899 Total current assets 195,887 (3,484 ) 192,403 Property, plant and equipment, net 93,433 — 93,433 Trade name and other intangible assets, net 111,725 — 111,725 Goodwill 108,060 — 108,060 Other assets, net 1,336 — 1,336 Total assets $ 510,441 $ (3,484 ) $ 506,957 Accounts payable and accrued liabilities $ 45,911 $ (298 ) $ 45,613 Current portion of long-term debt 303 — 303 Total current liabilities 46,214 (298 ) 45,916 Long-term debt, less current portion 215,081 — 215,081 Deferred income taxes 23,287 (647 ) 22,640 Other liabilities 17,015 — 17,015 Total liabilities 301,597 (945 ) 300,652 Total shareholders’ equity 208,844 (2,539 ) 206,305 Total liabilities and shareholders’ equity $ 510,441 $ (3,484 ) $ 506,957 Amounts in the tables above presented under “Previous Standard” represent balances as-if 2014-09 Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, 2016-02 2016-02

Revenue Recognition and Contrac

Revenue Recognition and Contracts with Customers	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition and Contracts with Customers	NOTE 2. REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS New Revenue Recognition Accounting Policy The Company is a manufacturer of fully-customized windows and doors, and manufactures products based on design specifications, measurements, colors, finishes, framing materials, glass-types, and other options selected by the customer at the point in time an order is received from the customer. The Company has an enforceable right to payment at the time an order is received and accepted at the agreed-upon sales prices contained in our agreements with our customers for all manufacturing efforts expended by the Company on behalf of its customers .The Company’s assessment is that all its finished goods and certain unused glass components have no alternative use, and that control of these products and components passes to the customer over time during the manufacturing of the products in an order, or upon our receipt of certain pre-cut Revenue recognized on products for which the manufacturing process has been completed is based on the per-unit per-unit Disaggregation of Revenue from Contracts with Customers The following table provides information about our revenue differentiated based on product category (dollars in millions): Three Months Ended June 30, 2018 Sales % of sales Product category: Impact-resistant windows and door products $ 146.8 86.7 % Non-Impact 22.5 13.3 % Total net sales $ 169.3 100.0 % Six Months Ended June 30, 2018 Sales % of sales Product category: Impact-resistant window and door products $ 267.3 86.4 % Non-impact 42.2 13.6 % Total net sales $ 309.5 100.0 % Contract Balances Contract assets represent sales recognized in excess of billings related to finished goods not yet shipped and certain unused glass components not yet placed into the production process for which revenue is recognized over time as noted above. Contract liabilities as reflected in the table below are customer deposits on orders related to contract assets. The following table provides information about contract asset and liability balances as of and for the three and six months ended June 30, 2018, and as of December 31, 2017, the first day of our 2018 fiscal year and the date of our adoption of ASU 2014-09 Contract Contract Contract Assets, Three months ended June 30, 2018: Assets Liabilities Net At June 30, 2018 $ 11,656 $ (644 ) $ 11,012 At March 31, 2018 9,669 (459 ) 9,210 Net increase $ 1,987 $ (185 ) $ 1,802 Contract Contract Contract Assets, Six months ended June 30, 2018: Assets Liabilities Net At June 30, 2018 $ 11,656 $ (644 ) $ 11,012 At December 31, 2017 8,704 (528 ) 8,176 Net increase $ 2,952 $ (116 ) $ 2,836 Contract assets, net, of $11.0 million is classified within other current assets in the accompanying condensed consolidated balance sheet as of June 30, 2018. Because we used the modified-retrospective method of adopting ASU 2014-09, Policies Regarding Shipping and Handling Costs and Commissions on Contract Assets The Company has made a policy election to continue to recognize shipping and handling costs as a fulfillment activity. Treating shipping and handling as a fulfillment activity requires estimated shipping and handling costs for undelivered products and certain glass components on which we have recognized revenue and created a contract asset, to be accrued to match this cost with the recognized revenue. This policy is unchanged from the Company’s policy for recognizing shipping and handling costs prior to the adoption of the new revenue guidance. The newly adopted revenue guidance provides for a practical expedient which permits expensing of costs to obtain a contract when the expected amortization period is one year or less, which typically results in expensing commissions paid to employees. We continue to expense sales commissions paid to employees as sales are recognized, including sales from the creation of contract assets, as the expected amortization period is less than one year. Our backlog as of June 30, 2018, is $98.9 million. Backlog is composed of confirmed, non cancellable orders scheduled for production and for which the customer has an obligation to pay.

Warranty

Warranty	6 Months Ended
	Jun. 30, 2018
Guarantees and Product Warranties [Abstract]
Warranty	NOTE 3. WARRANTY Most of our manufactured products are sold with warranties. Warranty periods, which vary by product components, generally range from 1 to 10 years; however, the warranty period for a limited number of specifically identified components in certain applications is a lifetime. The majority of the products sold have warranties on components which range from 1 to 3 years. The reserve for warranties is based on management’s assessment of the cost per service call and the number of service calls expected to be incurred to satisfy warranty obligations on the current net sales. During the three months ended June 30, 2018, we recorded warranty expense at a rate of approximately 1.7% of sales, which decreased from the rate in the second quarter of 2017 of 2.2% of sales. During the six months ended June 30, 2018, we recorded warranty expense at a rate of approximately 1.7% of sales, which decreased from the rate in the first half of 2017 of 2.2% of sales. We believe the decrease in warranty expense as a percentage of sales was the result of our workforce becoming more seasoned through experience and training, as well as a change in our warranty profile on PGT-branded The following table summarizes: current period charges, adjustments to previous estimates, if necessary, as well as settlements, which represent actual costs incurred during the period for the three months ended June 30, 2018, and July 1, 2017. The reserve is determined through specific identification and assessing Company history. Expected future obligations are discounted to a current value using a risk-free rate for obligations with similar maturities. Beginning Charged End of Accrued Warranty of Period to Expense Adjustments Settlements Period (in thousands) Three months ended June 30, 2018 $ 5,323 $ 2,851 $ (98 ) $ (2,708 ) $ 5,368 Three months ended July 1, 2017 $ 5,614 $ 3,045 $ (153 ) $ (2,827 ) $ 5,679 Six months ended June 30, 2018 $ 5,386 $ 5,217 $ (208 ) $ (5,027 ) $ 5,368 Six months ended July 1, 2017 $ 5,569 $ 6,088 $ (64 ) $ (5,914 ) $ 5,679

Inventories

Inventories	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventories	NOTE 4. INVENTORIES Inventories consist principally of raw materials purchased for the manufacture of our products. We have limited finished goods inventory since all products are custom, made-to-order work-in-progress (first-in, first-out June 30, December 30, 2018 2017 (in thousands) Raw materials $ 32,811 $ 30,139 Work-in-progress 2,515 2,506 Finished goods — 5,171 $ 35,326 $ 37,816

Stock Based Compensation

Stock Based Compensation	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	NOTE 5. STOCK BASED-COMPENSATION Exercises For the three months ended June 30, 2018, there were 694,423 options exercised at a weighted average exercise price of $2.00 per share. For the six months ended June 30, 2018, there were 780,972 options exercised at a weighted average exercise price of $2.00 per share. Issuance On March 2, 2018, we granted 139,182 restricted stock awards to certain executives and non-executive The performance criteria, as defined in the share awards, provides for a graded awarding of shares based on the percentage by which the Company meets earnings before interest and taxes, as defined, in our 2018 business plan. The performance percentages, ranging from less than 80% to greater than 120%, provide for the awarding of shares ranging from no shares to 150% of the original number of shares. On May 17, 2018, we granted 30,456 restricted stock awards to the eight non-management Stock Compensation Expense We record stock compensation expense over an award’s vesting period based on the award’s fair value at the date of grant. We recorded compensation expense for stock-based awards of $0.7 million for the three months ended June 30, 2018, and $0.6 million for the three month ended July 1, 2017. We recorded compensation expense for stock-based awards of $1.2 million for the six months ended June 30, 2018, and $1.0 million for the six months ended July 1, 2017. As of June 30, 2018, there was $3.7 million of total unrecognized compensation cost related primarily to restricted share awards. These costs are expected to be recognized in earnings on an accelerated basis over the weighted average remaining vesting period of 1.7 years at June 30, 2018.

Net Income Per Common Share

Net Income Per Common Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Net Income Per Common Share	NOTE 6. NET INCOME PER COMMON SHARE Basic earnings per share (“EPS”) is computed by dividing net income available to common shareholders, by the weighted-average number of common shares outstanding during the period. Diluted EPS reflects the dilutive effect of potential common shares from securities such as stock options. There were no anti-dilutive securities excluded from the calculation of weighted average shares outstanding for the three and six months ended June 30, 2018. The three and six months ended July 1, 2017, excludes 20 thousand underlying securities because their effects were anti-dilutive. The table below presents the calculation of EPS and a reconciliation of weighted average common shares used in the calculation of basic and diluted EPS for our Company: Three Months Ended Six Months Ended June 30, July 1, June 30, July 1, 2018 2017 2018 2017 (in thousands, except per share amounts) Net income $ 22,548 $ 10,255 $ 29,888 $ 13,254 Weighted-average common shares - Basic 50,317 49,473 50,087 49,368 Add: Dilutive effect of stock compensation plans 1,739 2,191 1,936 2,239 Weighted-average common shares - Diluted 52,056 51,664 52,023 51,607 Net income per common share: Basic $ 0.45 $ 0.21 $ 0.60 $ 0.27 Diluted $ 0.43 $ 0.20 $ 0.57 $ 0.26

Sale of Assets

Sale of Assets	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Sale of Assets	NOTE 7. SALE OF ASSETS Sale of Door Glass Processing Assets On September 22, 2017, we entered into an Asset Purchase Agreement (APA) with Cardinal LG Company (Cardinal) for the sale to Cardinal of certain manufacturing equipment we used in processing glass components for PGT-branded PGT-branded The Company has determined that, although the APA and SA are separate agreements, they were negotiated contemporaneously. Therefore, the Company has concluded that the $28 million of proceeds under the APA should be bifurcated between the sale of the door glass manufacturing assets, and as payment received from a vendor for the Company’s agreement to buy glass components for PGT-branded PGT-branded 7-year At the time we ceased using these assets in production, at which time they became available for immediate sale, their net book value was $4.7 million, and they were reclassified from property, plant and equipment, to assets held for sale within other current assets. The APA provided for the transfer of the assets from the Company to Cardinal in two phases, with the first date in 2017, and the second date in 2018, on dates which the Company and Cardinal agree to use. Under the APA, the cash purchase price of $28 million was to be paid by Cardinal to the Company in three separate payments of $3 million on or about the time of the first transfer of the assets to Cardinal, $10 million on or about January 15, 2018, and $15 million at or about the time of the second transfer of assets to Cardinal. Cardinal paid us $3.0 million in cash on November 1, 2017, $10.0 million in cash on January 16, 2018, and $14.8 million on June 8, 2018, pursuant to the APA. The total proceeds received of $27.8 million was $0.2 million less than the $28.0 million as specified in the APA as we retained several assets that were initially identified for transfer. On December 15, 2017, machinery and equipment classified as assets held for sale with net book value of $1.5 million, and fair value of $1.9 million was transferred to Cardinal and their equipment rigger, and we recognized a gain for the difference. Substantially all of the remaining machinery and equipment was transferred to Cardinal during the second quarter of 2018, which had a net book value of $3.2 million and fair value of $5.8 million. We recognized gains on disposals for the difference totaling $2.6 million during the three and six months ended June 30, 2018, classified as a separate line item in the accompanying condensed consolidated statements of comprehensive income for the three and six months ended June 30, 2018. The SA provides that the Company will purchase, and Cardinal will supply, all the Company’s requirements for certain glass components used in PGT-branded

Goodwill, Trade Names, and Othe

Goodwill, Trade Names, and Other Intangible Assets	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Trade Names, and Other Intangible Assets	NOTE 8. GOODWILL, TRADE NAMES, AND OTHER INTANGIBLE ASSETS Goodwill, trade names, and other intangible assets, net, are as follows: Initial June 30, December 30, Useful Life 2018 2017 (in years) (in thousands) Goodwill $ 108,060 $ 108,060 indefinite Trade names and other intangible assets: Trade names $ 75,841 $ 75,841 indefinite Customer relationships 106,647 106,647 3-10 Developed technology 3,000 3,000 9-10 Non-compete 1,668 1,668 2-5 Software license 590 590 2 Less: Accumulated amortization (76,021 ) (72,703 ) Subtotal 35,884 39,202 Other intangible assets, net $ 111,725 $ 115,043 Estimated amortization of our amortizable intangible assets for future years is as follows: (in thousands) Total Remainder of 2018 $ 3,317 2019 6,430 2020 6,278 2021 5,974 2022 5,116 Thereafter 8,769 Total $ 35,884

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	NOTE 9. LONG-TERM DEBT June 30, December 30, 2018 2017 (in thousands) Term loan payable under the 2016 Credit Agreement $ 223,975 $ 223,975 Other debt 312 458 Fees, costs and original issue discount (8,903 ) (11,460 ) Long-term debt 215,384 212,973 Less current portion of long-term debt (303 ) (294 ) Long-term debt, less current portion $ 215,081 $ 212,679 2016 Credit Agreement On February 16, 2016, we entered into a Credit Agreement (“2016 Credit Agreement”), among us, the lending institutions identified in the 2016 Credit Agreement, and Deutsche Bank AG New York Branch, as Administrative Agent and Collateral Agent. The 2016 Credit Agreement establishes senior secured credit facilities in an aggregate amount of $310.0 million, consisting of a $270.0 million Term B term loan facility maturing in February 2022 that amortizes on a basis of 1% annually during its six-year On March 16, 2018, we entered into an amendment to our 2016 Credit Agreement (“Second Amendment”). The Second Amendment, among other things, decreases the applicable interest rate margins for the Initial Term Loans (as defined in the Credit Agreement) from (i) 3.75% to 2.50%, in the case of the Base Rate Loans (as defined in the Credit Agreement), and (ii) 4.75% to 3.50%, in the case of the Eurodollar Loans (as defined in the Credit Agreement). In addition to these changes, in the Second Amendment, SunTrust Bank replaced Deutsche Bank AG New York Branch as Administrative Agent and Collateral Agent of the 2016 Credit Agreement. On February 17, 2017, we entered into the first amendment to our 2016 Credit Agreement, which also resulted in decreases in the applicable margins, but which did not include any changes in lender positions. In connection with the Second Amendment, certain existing lenders modified their positions in or exited the 2016 Credit Agreement, which resulted in the write-offs of portions of the deferred financing costs and original issue discount allocated to these lenders, which totaled $3.1 million classified as debt extinguishment costs in the accompanying condensed consolidated statement of comprehensive income for the six months ended June 30, 2018. Regarding the first amendment as described above, as there were no changes in lender positions, this action did not result in any modifications or extinguishments of debt. Therefore, there was no charge for debt extinguishment costs in the three months ended July 1, 2017. Interest on all loans under the 2016 Credit Agreement is payable either quarterly or at the expiration of any LIBOR interest period applicable thereto. Prior to amending the 2016 Credit Agreement on March 16, 2018, as described above, borrowings under the term loans and the revolving credit facility accrued interest at a rate equal to, at our option, LIBOR (with a floor of 100 basis points in respect of the term loan), or a base rate (with a floor of 200 basis points in respect of the term loan) plus an applicable margin. The applicable margin was 475 basis points in the case of LIBOR and 375 basis points in the case of the base rate. The weighted average all-in We also pay quarterly fees on the unused portion of the revolving credit facility equal to 50 basis points per annum as well as a quarterly letter of credit fee at 575 basis points per annum plus a 12.5 basis point facing fee per annum on the face amount of any outstanding letters of credit. As of June 30, 2018, there were $1.2 million of letters of credit outstanding and $38.8 million available under the revolver. The 2016 Credit Agreement contains a springing financial covenant, if we draw in excess of twenty percent (20%) of the revolving facility, which requires us to maintain a maximum total net leverage ratio (based on the ratio of total debt for borrowed money to trailing EBITDA, each as defined in the 2016 Credit Agreement). That covenant is tested quarterly based on the last four fiscal quarters and is set at levels as described in the 2016 Credit Agreement. As of June 30, 2018, no such test is required as we have not exceeded 20% of our revolving capacity. We believe that our total net leverage ratio during the first quarter of 2018 was in compliance with the 2016 Credit Agreement, and that we are in compliance with all covenants. The 2016 Credit Agreement also contains a number of affirmative and restrictive covenants, including limitations on the incurrence of additional debt, liens on property, acquisitions and investments, loans and guarantees, mergers, consolidations, liquidations and dissolutions, asset sales, dividends and other payments in respect of our capital stock, prepayments of certain debt and transactions with affiliates. The 2016 Credit Agreement also contains customary events of default. Upon the occurrence of an event of default, the amounts outstanding under the 2016 Credit Agreement may be accelerated and may become immediately due and payable. As of June 30, 2018, we were in compliance with all affirmative and restrictive covenants. In connection with entering into the 2016 Credit Agreement, on February 16, 2016, we terminated our prior credit agreement, dated as of September 22, 2014, among PGT Industries, Inc., as the borrower, the Company, as guarantor, the lenders from time to time party thereto and Deutsche Bank, as administrative agent and collateral agent (“2014 Credit Agreement”). Along with cash on hand, proceeds from the term loan facility under the 2016 Credit Agreement were used to repay amounts outstanding under the 2014 Credit Agreement, acquire WinDoor, and pay certain fees and expenses. As of June 30, 2018, the face value of debt outstanding under the 2016 Credit Agreement was $224.0 million, and accrued interest was $0.1 million. The activity relating to third-party fees and costs, lender fees and discount for the six months ended June 30, 2018, are as follows. All debt-related fees, costs and original issue discount are classified as a reduction of the carrying value of long-term debt: (in thousands) Total At beginning of year $ 11,460 Amortization expense through March 16, 2018 (520 ) At time of refinancing 10,940 Add: Second amendment refinancing costs 1,687 Less: Debt extinguishment costs (3,079 ) Less: Amortization expense after refinancing (645 ) At end of period $ 8,903 Estimated amortization expense relating to third-party fees and costs, lender fees and discount for the years indicated as of June 30, 2018, is as follows: (in thousands) Total Remainder of 2018 $ 1,126 2019 2,368 2020 2,584 2021 2,506 2022 319 Total $ 8,903 As a result of voluntary prepayments totaling $44.0 million we made since the inception of the 2016 Credit Agreement on February 16, 2016, we have no future scheduled repayments until the maturity of the facility on February 21, 2022. The contractual future maturities of long-term debt outstanding, including the financing arrangement described as other debt, as of June 30, 2018, are as follows (at face value): (in thousands) Remainder of 2018 $ 148 2019 164 2020 — 2021 — 2022 223,975 Total $ 224,287 Other Debt In July 2017, we entered into a two-year

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 10. COMMITMENTS AND CONTINGENCIES Litigation Our Company is a party to various legal proceedings in the ordinary course of business. Although the ultimate disposition of those proceedings cannot be predicted with certainty, management believes the outcome of any claim that is pending or threatened, either individually or in the aggregate, will not have a materially adverse effect on our operations, financial position or cash flows.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 11. INCOME TAXES Income tax expense was $3.8 million for the three months ended June 30, 2018, compared with $5.1 million for the three months ended July 1, 2017. Our effective tax rate for the three months ended June 30, 2018, was 14.3%, and was 33.1% for the three months ended July 1, 2017. Income tax expense was $5.4 million for the six months ended June 30, 2018, compared with $6.1 million for the six months ended July 1, 2017. Our effective tax rate for the six months ended June 30, 2018, was 15.3%, and was 31.6% for the six months ended July 1, 2017. Income tax expense in the three months ended June 30, 2018, and July 1, 2017, includes excess tax benefits relating to exercises of stock options and lapses of restrictions on stock awards, treated as a discrete item of income tax, totaling $3.0 million and $407 thousand, respectively. Income tax expense in the six months ended June 30, 2018, and July 1, 2017, includes excess tax benefits totaling $3.6 million and $795 thousand, respectively. Excluding this discrete item, the effective tax rates for the three months ended June 30, 2018, and July 1, 2017, would have been 25.8% and 35.8%, respectively. Excluding this discrete item, the effective tax rates for the six months ended June 30, 2018, and July 1, 2017, would have been 25.6% and 35.7%, respectively. As a result of the Tax Cuts and Jobs Act, enacted effective on December 22, 2017, the section 199 domestic manufacturing deduction was repealed. As such, our effective tax rate, excluding the discrete items discussed above, approximates our current combined statutory federal and state rate of 25.6%. In 2017, the effective tax rate, excluding the effect of the discrete item discussed above, was lower than our then combined statutory federal and state tax rate of 38.8% primarily as the result of the estimated impact of the section 199 domestic manufacturing deduction. At December 30, 2017, accrued federal and state income taxes payable of $6.5 million was classified within accrued liabilities in the accompanying condensed consolidated balance sheet. The Internal Revenue Service provided tax relief relating to taxpayers in certain designated areas of Florida impacted by Hurricane Irma, which included all counties in Florida in which we operate. As a result, the deadline for remitting our required 2017 third quarter estimated payment for corporate income taxes, as well as the deadline for filing our 2016 fiscal year corporate income tax return, was extended to January 31, 2018. Therefore, in January 2018, we made an estimated Federal income tax payment totaling $9.0 million relating to the 2017 tax year. We made an additional estimated Federal income tax payment of $1.2 million, and an estimated income tax payment to Florida of $1.8 million, for our 2018 tax year in the second quarter of 2018. During the three or six months ended July 1, 2017, we did not make any payments of estimated federal or state income taxes, nor did we receive any refunds of federal or state income taxes.

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value	NOTE 12. FAIR VALUE Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A three-tier fair value hierarchy is used to prioritize the inputs used in measuring fair value. The hierarchy gives the highest priority to unadjusted quoted market prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The three levels of the fair value hierarchy are as follows: Level 1 Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. Level 2 Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. The accounting guidance concerning fair value allows us to elect to measure financial instruments at fair value and report the changes in fair value through earnings. This election can only be made at certain specified dates and is irrevocable once made. We do not have a policy regarding specific assets or liabilities to elect to measure at fair value, but rather we make the election on an instrument-by-instrument During the three months ended June 30, 2018, or July 1, 2017, we did not make any transfers between Level 2 and Level 3 financial assets. We conduct reviews on a quarterly basis to verify pricing, assess liquidity, and determine if significant inputs have changed that would impact the fair value hierarchy disclosure. Fair Value of Financial Instruments Our financial instruments include cash, accounts and notes receivable, and accounts payable, accrued liabilities and other debt, whose carrying amounts approximate their fair values due to their short-term nature. Our financial instruments also include borrowings under our 2016 Credit Agreement, classified as long-term debt. The fair value of this component of long-term debt is based on debt with similar terms and characteristics and was approximately $225.7 million as of June 30, 2018, compared to a principal outstanding value of $224.0 million, and $227.3 million as of December 30, 2017, compared to a principal outstanding value of $224.0 million. Fair values were determined based on observed trading prices of our debt between domestic financial institutions. Items Measured at Fair Value on a Recurring Basis The following are measured in the consolidated financial statements at fair value on a recurring basis and are categorized in the table below based upon the lowest level of significant input to the valuation (in thousands): Fair Value Measurements Assets (Liabilities) Quoted Significant Prices in Other Significant Active Observable Unobservable June 30, Markets Inputs Inputs 2018 (Level 1) (Level 2) (Level 3) Description Aluminum forward contracts, net $ (516 ) $ — $ (516 ) $ — $ (516 ) $ — $ (516 ) $ — The following is a description of the methods and assumptions used to estimate the fair values of the Company’s assets and liabilities measured at fair value on a recurring basis, as well as the basis for classifying these assets and liabilities as Level 2. Aluminum forward contracts identical to those held by us trade on the London Metal Exchange (“LME”). The LME provides a transparent forum and is the world’s largest center for the trading of futures contracts for non-ferrous

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	NOTE 13. DERIVATIVES Aluminum Contracts We enter into aluminum forward contracts to hedge the fluctuations in the purchase price of aluminum extrusion we use in production. Our contracts are designated as cash flow hedges since they are highly effective in offsetting changes in the cash flows attributable to forecasted purchases of aluminum. Guidance under the Financial Instruments topic of the Codification requires us to record our hedge contracts at fair value and consider our credit risk for contracts in a liability position, and our counter-party’s credit risk for contracts in an asset position, in determining fair value. We assess our counter-party’s risk of non-performance non-performance At June 30, 2018, the fair value of our aluminum forward contracts was in a net liability position of $516 thousand. We had nineteen outstanding forward contracts for the purchase of 18.6 million pounds of aluminum through December 2019, at an average price of $1.00 per pound, which excludes the Midwest premium, with maturity dates of between one month and eighteen months. We assessed the risk of non-performance We assess the effectiveness of our aluminum forward contracts by comparing the change in the fair value of the forward contract to the change in the expected cash to be paid for the hedged item. The effective portion of the gain or loss on our aluminum forward contracts is reported as a component of accumulated other comprehensive loss and is reclassified into earnings in the same line item in the income statement as the hedged item in the same period or periods during which the transaction affects earnings. The amount of losses, net, recognized in the “accumulated other comprehensive loss” line item in the accompanying condensed consolidated balance sheet as of June 30, 2018, that we expect will be reclassified to earnings within the next twelve months, will be approximately $224 thousand. The fair value of our aluminum hedges are classified in the accompanying consolidated balance sheets as follows (in thousands): Derivative Assets Derivative Liabilities June 30, 2018 June 30, 2018 Derivatives designated as hedging instruments under Subtopic 815-20: Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivative instruments: Aluminum forward contracts Other current assets $ 128 Accrued liabilities $ (352 ) Aluminum forward contracts — Other liabilities (292 ) Total derivative instruments Total derivative assets $ 128 Total derivative liabilities $ (644 ) The ending accumulated balance for the aluminum forward contracts included in accumulated other comprehensive losses, net of tax, was $384 thousand as of June 30, 2018. We had no outstanding derivative contracts as of December 30, 2017. The following represents the gains (losses) on derivative financial instruments, and their classifications within the accompanying condensed consolidated financial statements (in thousands): Derivatives in Cash Flow Hedging Relationships Amount of Gain (Loss) Location of Gain from Accumulated Amount of Gain (Loss) Three Months Ended Three Months Ended June 30, July 1, June 30, July 1, 2018 2017 2018 2017 Aluminum contracts $ (390 ) $ — Cost of sales $ 43 $ — Location of Gain Amount of Gain (Loss) Three Months Ended June 30, July 1, 2018 2017 Aluminum contracts Cost of sales $ — $ — Derivatives in Cash Flow Hedging Relationships Amount of Gain (Loss) Location of Gain Amount of Gain (Loss) Six Months Ended Six Months Ended June 30, July 1, June 30, July 1, 2018 2017 2018 2017 Aluminum contracts $ (473 ) $ — Cost of sales $ 43 $ — Location of Gain (Loss) Recognized in Income on Amount of Gain (Loss) Six Months Ended June 30, July 1, 2018 2017 Aluminum contracts Cost of sales $ — $ —

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Accumulated Other Comprehensive Loss	NOTE 14. ACCUMULATED OTHER COMPREHENSIVE LOSS The following table shows the components of accumulated other comprehensive loss for the three and six months ended June 30, 2018: Aluminum Three months ended June 30, 2018 Forward (in thousands) Contracts Balance at March 31, 2018 $ (62 ) Other comprehensive loss (390 ) Amounts reclassified from other comprehensive loss (43 ) Tax effect 111 Net current-period other comprehensive loss (322 ) Balance at June 30, 2018 $ (384 ) Aluminum Six months ended June 30, 2018 Forward (in thousands) Contracts Balance at December 30, 2017 $ — Other comprehensive loss before reclassification (473 ) Amounts reclassified from other comprehensive loss (43 ) Tax effect 132 Net current-period other comprehensive loss (384 ) Balance at June 30, 2018 $ (384 )

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	NOTE 15. SUBSEQUENT EVENT On July 24, 2018, we announced that we have entered into a definitive agreement under which PGT Innovations will acquire Western Window Systems from PWP Growth Equity, the middle market private equity group of Perella Weinberg Partners, for $360 million in cash, subject to customary adjustments. The transaction, which was unanimously approved by our Board of Directors, is expected to be completed in the third quarter of 2018, and is subject to customary closing conditions. We expect to finance the transaction through a combination of cash on hand and $315 million of incremental debt, for which we have received financing commitments.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In August 2017, the FASB issued ASU 2017-12, 2017-12 2017-12 2017-12. In February 2017, the FASB issued ASU 2017-05, 2017-05 610-20, 610-20, 2014-09, non-customers. In January 2017, the FASB issued ASU 2017-01, 2017-01 2017-01 In August 2016, the FASB issued ASU 2016-15, 2016-15 Adoption of ASU 2014-09, We adopted the new revenue recognition standard on December 31, 2017 (the first day of our 2018 fiscal year) using the modified retrospective adoption methodology, whereby the cumulative impact of all prior periods is recorded in retained earnings or other impacted balance sheet line items upon adoption. Under the modified retrospective adoption method, we elected to retroactively adjust, inclusive of all previous modifications, only those contracts that were considered open at the date of initial application. Refer to Note 2, “Revenue Recognition and Contracts with Customers” for further information along with our new accounting policies. Upon adoption, we recognized a net decrease to the fiscal year 2018 opening balance of accumulated deficit of $1.9 million related to sales in excess of billings of $8.7 million, that would have been recognized as earned over time in our prior year ended December 30, 2017. The details of the adjustment to accumulated deficit upon adoption on December 31, 2017 (the first day or our 2018 fiscal year) is as follows (in thousands): Cumulative Effect Description of Effects on Line Item Net sales $ 8,704 Additional contract asset sales Cost of sales (5,642 ) Inventory classified as cost of sales SG&A expenses (532 ) Accruals for selling costs Income tax expense (647 ) Estimated income tax effects Net income $ 1,883 Additional net income The following tables reconcile the balances as presented as of and for the three months ended June 30, 2018 to the balances prior to the adjustments made to implement the new revenue recognition standard for the same period, for the accompanying condensed consolidated statement of comprehensive income, and the condensed consolidated balance sheet. The impact to the condensed consolidated statement of cash flows for the three months ended June 30, 2018 was deemed insignificant (in thousands, except per share amounts): Three Months Ended June 30, 2018 As Impact of Previous Presented ASU 2014-09 Standard (unaudited) Net sales $ 169,269 $ (1,987 ) $ 167,282 Cost of sales 109,322 (1,459 ) 107,863 Gross profit 59,947 (528 ) 59,419 Selling, general and administrative expenses 32,581 (100 ) 32,481 Gains on transfers of assets (2,551 ) — (2,551 ) Income from operations 29,917 (428 ) 29,489 Interest expense, net 3,609 — 3,609 Debt extinguishment costs — — — Income before income taxes 26,308 (428 ) 25,880 Income tax expense 3,760 (108 ) 3,652 Net income $ 22,548 $ (320 ) $ 22,228 Basic $ 0.45 $ 0.44 Diluted $ 0.43 $ 0.43 Comprehensive income $ 22,226 $ (320 ) $ 21,906 Six Months Ended June 30, 2018 As Impact of ASU 2014-09 Previous (unaudited) Net sales $ 309,522 $ (2,952 ) $ 306,570 Cost of sales 204,802 (1,886 ) 202,916 Gross profit 104,720 (1,066 ) 103,654 Selling, general and administrative expenses 61,238 (185 ) 61,053 Gains on transfers of assets (2,551 ) — (2,551 ) Income from operations 46,033 (881 ) 45,152 Interest expense, net 7,652 — 7,652 Debt extinguishment costs 3,079 — 3,079 Income before income taxes 35,302 (881 ) 34,421 Income tax expense 5,414 (225 ) 5,189 Net income $ 29,888 $ (656 ) $ 29,232 Basic $ 0.60 $ 0.58 Diluted $ 0.57 $ 0.56 Comprehensive income $ 29,504 $ (656 ) $ 28,848 At June 30, 2018 As Impact of ASU 2014-09 Previous (unaudited) Cash and cash equivalents $ 63,923 $ — $ 63,923 Accounts receivable, net 74,970 — 74,970 Inventories 35,326 7,528 42,854 Contract assets, net 11,012 (11,012 ) — Prepaid expenses 2,757 — 2,757 Other current assets 7,899 — 7,899 Total current assets 195,887 (3,484 ) 192,403 Property, plant and equipment, net 93,433 — 93,433 Trade name and other intangible assets, net 111,725 — 111,725 Goodwill 108,060 — 108,060 Other assets, net 1,336 — 1,336 Total assets $ 510,441 $ (3,484 ) $ 506,957 Accounts payable and accrued liabilities $ 45,911 $ (298 ) $ 45,613 Current portion of long-term debt 303 — 303 Total current liabilities 46,214 (298 ) 45,916 Long-term debt, less current portion 215,081 — 215,081 Deferred income taxes 23,287 (647 ) 22,640 Other liabilities 17,015 — 17,015 Total liabilities 301,597 (945 ) 300,652 Total shareholders’ equity 208,844 (2,539 ) 206,305 Total liabilities and shareholders’ equity $ 510,441 $ (3,484 ) $ 506,957 Amounts in the tables above presented under “Previous Standard” represent balances as-if 2014-09 Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-02, 2016-02 2016-02
New Revenue Recognition Accounting Policy	New Revenue Recognition Accounting Policy The Company is a manufacturer of fully-customized windows and doors, and manufactures products based on design specifications, measurements, colors, finishes, framing materials, glass-types, and other options selected by the customer at the point in time an order is received from the customer. The Company has an enforceable right to payment at the time an order is received and accepted at the agreed-upon sales prices contained in our agreements with our customers for all manufacturing efforts expended by the Company on behalf of its customers .The Company’s assessment is that all its finished goods and certain unused glass components have no alternative use, and that control of these products and components passes to the customer over time during the manufacturing of the products in an order, or upon our receipt of certain pre-cut Revenue recognized on products for which the manufacturing process has been completed is based on the per-unit per-unit
Policies Regarding Shipping and Handling Costs and Commissions on Contract Assets	Policies Regarding Shipping and Handling Costs and Commissions on Contract Assets The Company has made a policy election to continue to recognize shipping and handling costs as a fulfillment activity. Treating shipping and handling as a fulfillment activity requires estimated shipping and handling costs for undelivered products and certain glass components on which we have recognized revenue and created a contract asset, to be accrued to match this cost with the recognized revenue. This policy is unchanged from the Company’s policy for recognizing shipping and handling costs prior to the adoption of the new revenue guidance. The newly adopted revenue guidance provides for a practical expedient which permits expensing of costs to obtain a contract when the expected amortization period is one year or less, which typically results in expensing commissions paid to employees. We continue to expense sales commissions paid to employees as sales are recognized, including sales from the creation of contract assets, as the expected amortization period is less than one year. Our backlog as of June 30, 2018, is $98.9 million. Backlog is composed of confirmed, non cancellable orders scheduled for production and for which the customer has an obligation to pay.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Revenue Recognition	The details of the adjustment to accumulated deficit upon adoption on December 31, 2017 (the first day or our 2018 fiscal year) is as follows (in thousands): Cumulative Effect Description of Effects on Line Item Net sales $ 8,704 Additional contract asset sales Cost of sales (5,642 ) Inventory classified as cost of sales SG&A expenses (532 ) Accruals for selling costs Income tax expense (647 ) Estimated income tax effects Net income $ 1,883 Additional net income The following tables reconcile the balances as presented as of and for the three months ended June 30, 2018 to the balances prior to the adjustments made to implement the new revenue recognition standard for the same period, for the accompanying condensed consolidated statement of comprehensive income, and the condensed consolidated balance sheet. The impact to the condensed consolidated statement of cash flows for the three months ended June 30, 2018 was deemed insignificant (in thousands, except per share amounts): Three Months Ended June 30, 2018 As Impact of Previous Presented ASU 2014-09 Standard Net sales $ 169,269 $ (1,987 ) $ 167,282 Cost of sales 109,322 (1,459 ) 107,863 Gross profit 59,947 (528 ) 59,419 Selling, general and administrative expenses 32,581 (100 ) 32,481 Gains on transfers of assets (2,551 ) — (2,551 ) Income from operations 29,917 (428 ) 29,489 Interest expense, net 3,609 — 3,609 Debt extinguishment costs — — — Income before income taxes 26,308 (428 ) 25,880 Income tax expense 3,760 (108 ) 3,652 Net income $ 22,548 $ (320 ) $ 22,228 Basic $ 0.45 $ 0.44 Diluted $ 0.43 $ 0.43 Comprehensive income $ 22,226 $ (320 ) $ 21,906 Six Months Ended June 30, 2018 As Impact of ASU 2014-09 Previous Net sales $ 309,522 $ (2,952 ) $ 306,570 Cost of sales 204,802 (1,886 ) 202,916 Gross profit 104,720 (1,066 ) 103,654 Selling, general and administrative expenses 61,238 (185 ) 61,053 Gains on transfers of assets (2,551 ) — (2,551 ) Income from operations 46,033 (881 ) 45,152 Interest expense, net 7,652 — 7,652 Debt extinguishment costs 3,079 — 3,079 Income before income taxes 35,302 (881 ) 34,421 Income tax expense 5,414 (225 ) 5,189 Net income $ 29,888 $ (656 ) $ 29,232 Basic $ 0.60 $ 0.58 Diluted $ 0.57 $ 0.56 Comprehensive income $ 29,504 $ (656 ) $ 28,848 At June 30, 2018 As Impact of ASU 2014-09 Previous Cash and cash equivalents $ 63,923 $ — $ 63,923 Accounts receivable, net 74,970 — 74,970 Inventories 35,326 7,528 42,854 Contract assets, net 11,012 (11,012 ) — Prepaid expenses 2,757 — 2,757 Other current assets 7,899 — 7,899 Total current assets 195,887 (3,484 ) 192,403 Property, plant and equipment, net 93,433 — 93,433 Trade name and other intangible assets, net 111,725 — 111,725 Goodwill 108,060 — 108,060 Other assets, net 1,336 — 1,336 Total assets $ 510,441 $ (3,484 ) $ 506,957 Accounts payable and accrued liabilities $ 45,911 $ (298 ) $ 45,613 Current portion of long-term debt 303 — 303 Total current liabilities 46,214 (298 ) 45,916 Long-term debt, less current portion 215,081 — 215,081 Deferred income taxes 23,287 (647 ) 22,640 Other liabilities 17,015 — 17,015 Total liabilities 301,597 (945 ) 300,652 Total shareholders’ equity 208,844 (2,539 ) 206,305 Total liabilities and shareholders’ equity $ 510,441 $ (3,484 ) $ 506,957

Revenue Recognition and Contr23

Revenue Recognition and Contracts with Customers (Tables)	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue Based on Product Category	The following table provides information about our revenue differentiated based on product category (dollars in millions): Three Months Ended June 30, 2018 Sales % of sales Product category: Impact-resistant windows and door products $ 146.8 86.7 % Non-Impact 22.5 13.3 % Total net sales $ 169.3 100.0 % Six Months Ended June 30, 2018 Sales % of sales Product category: Impact-resistant window and door products $ 267.3 86.4 % Non-impact 42.2 13.6 % Total net sales $ 309.5 100.0 %
Contract Asset and Liability Balances	The following table provides information about contract asset and liability balances as of and for the three and six months ended June 30, 2018, and as of December 31, 2017, the first day of our 2018 fiscal year and the date of our adoption of ASU 2014-09 Contract Contract Contract Assets, Three months ended June 30, 2018: Assets Liabilities Net At June 30, 2018 $ 11,656 $ (644 ) $ 11,012 At March 31, 2018 9,669 (459 ) 9,210 Net increase $ 1,987 $ (185 ) $ 1,802 Contract Contract Contract Assets, Six months ended June 30, 2018: Assets Liabilities Net At June 30, 2018 $ 11,656 $ (644 ) $ 11,012 At December 31, 2017 8,704 (528 ) 8,176 Net increase $ 2,952 $ (116 ) $ 2,836

Warranty (Tables)

Warranty (Tables)	6 Months Ended
	Jun. 30, 2018
Guarantees and Product Warranties [Abstract]
Summary of Current Period Charges, Adjustments to Previous Estimates, Settlements representing Actual Costs Incurred with regard to Accrued Warranty	The following table summarizes: current period charges, adjustments to previous estimates, if necessary, as well as settlements, which represent actual costs incurred during the period for the three months ended June 30, 2018, and July 1, 2017. The reserve is determined through specific identification and assessing Company history. Expected future obligations are discounted to a current value using a risk-free rate for obligations with similar maturities. Beginning Charged End of Accrued Warranty of Period to Expense Adjustments Settlements Period (in thousands) Three months ended June 30, 2018 $ 5,323 $ 2,851 $ (98 ) $ (2,708 ) $ 5,368 Three months ended July 1, 2017 $ 5,614 $ 3,045 $ (153 ) $ (2,827 ) $ 5,679 Six months ended June 30, 2018 $ 5,386 $ 5,217 $ (208 ) $ (5,027 ) $ 5,368 Six months ended July 1, 2017 $ 5,569 $ 6,088 $ (64 ) $ (5,914 ) $ 5,679

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories consisted of the following: June 30, December 30, 2018 2017 (in thousands) Raw materials $ 32,811 $ 30,139 Work-in-progress 2,515 2,506 Finished goods — 5,171 $ 35,326 $ 37,816

Net Income Per Common Share (Ta

Net Income Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Calculation of EPS and Reconciliation of Weighted Average Common Shares Used in Calculation of Basic and Diluted EPS	The table below presents the calculation of EPS and a reconciliation of weighted average common shares used in the calculation of basic and diluted EPS for our Company: Three Months Ended Six Months Ended June 30, July 1, June 30, July 1, 2018 2017 2018 2017 (in thousands, except per share amounts) Net income $ 22,548 $ 10,255 $ 29,888 $ 13,254 Weighted-average common shares - Basic 50,317 49,473 50,087 49,368 Add: Dilutive effect of stock compensation plans 1,739 2,191 1,936 2,239 Weighted-average common shares - Diluted 52,056 51,664 52,023 51,607 Net income per common share: Basic $ 0.45 $ 0.21 $ 0.60 $ 0.27 Diluted $ 0.43 $ 0.20 $ 0.57 $ 0.26

Goodwill, Trade Names, and Ot27

Goodwill, Trade Names, and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill, Trade Names and Other Intangible Assets Net	Goodwill, trade names, and other intangible assets, net, are as follows: Initial June 30, December 30, Useful Life 2018 2017 (in years) (in thousands) Goodwill $ 108,060 $ 108,060 indefinite Trade names and other intangible assets: Trade names $ 75,841 $ 75,841 indefinite Customer relationships 106,647 106,647 3-10 Developed technology 3,000 3,000 9-10 Non-compete 1,668 1,668 2-5 Software license 590 590 2 Less: Accumulated amortization (76,021 ) (72,703 ) Subtotal 35,884 39,202 Other intangible assets, net $ 111,725 $ 115,043
Estimated Amortization for Future Fiscal Year	Estimated amortization of our amortizable intangible assets for future years is as follows: (in thousands) Total Remainder of 2018 $ 3,317 2019 6,430 2020 6,278 2021 5,974 2022 5,116 Thereafter 8,769 Total $ 35,884

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt	June 30, December 30, 2018 2017 (in thousands) Term loan payable under the 2016 Credit Agreement $ 223,975 $ 223,975 Other debt 312 458 Fees, costs and original issue discount (8,903 ) (11,460 ) Long-term debt 215,384 212,973 Less current portion of long-term debt (303 ) (294 ) Long-term debt, less current portion $ 215,081 $ 212,679
Activity Relating to Third-Party Fees and Costs, Lender Fees and Discount	The activity relating to third-party fees and costs, lender fees and discount for the six months ended June 30, 2018, are as follows. All debt-related fees, costs and original issue discount are classified as a reduction of the carrying value of long-term debt: (in thousands) Total At beginning of year $ 11,460 Amortization expense through March 16, 2018 (520 ) At time of refinancing 10,940 Add: Second amendment refinancing costs 1,687 Less: Debt extinguishment costs (3,079 ) Less: Amortization expense after refinancing (645 ) At end of period $ 8,903
Estimated Amortization Expense Relating to Third-Party Fees and Costs, Lender Fees and Discount and Debt Issuance Costs	Estimated amortization expense relating to third-party fees and costs, lender fees and discount for the years indicated as of June 30, 2018, is as follows: (in thousands) Total Remainder of 2018 $ 1,126 2019 2,368 2020 2,584 2021 2,506 2022 319 Total $ 8,903
Contractual Future Maturities of Long-Term Debt Outstanding, Including Other Debt Relating to Software License Financing Arrangement	The contractual future maturities of long-term debt outstanding, including the financing arrangement described as other debt, as of June 30, 2018, are as follows (at face value): (in thousands) Remainder of 2018 $ 148 2019 164 2020 — 2021 — 2022 223,975 Total $ 224,287

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following are measured in the consolidated financial statements at fair value on a recurring basis and are categorized in the table below based upon the lowest level of significant input to the valuation (in thousands): Fair Value Measurements Assets (Liabilities) Quoted Significant Prices in Other Significant Active Observable Unobservable June 30, Markets Inputs Inputs 2018 (Level 1) (Level 2) (Level 3) Description Aluminum forward contracts, net $ (516 ) $ — $ (516 ) $ — $ (516 ) $ — $ (516 ) $ —

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Hedges	The fair value of our aluminum hedges are classified in the accompanying consolidated balance sheets as follows (in thousands): Derivative Assets Derivative Liabilities June 30, 2018 June 30, 2018 Derivatives designated as hedging instruments under Subtopic 815-20: Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivative instruments: Aluminum forward contracts Other current assets $ 128 Accrued liabilities $ (352 ) Aluminum forward contracts — Other liabilities (292 ) Total derivative instruments Total derivative assets $ 128 Total derivative liabilities $ (644 )
Gains (Losses) on Derivative Financial Instruments	The following represents the gains (losses) on derivative financial instruments, and their classifications within the accompanying condensed consolidated financial statements (in thousands): Derivatives in Cash Flow Hedging Relationships Amount of Gain (Loss) Location of Gain from Accumulated Amount of Gain (Loss) Three Months Ended Three Months Ended June 30, July 1, June 30, July 1, 2018 2017 2018 2017 Aluminum contracts $ (390 ) $ — Cost of sales $ 43 $ — Location of Gain Amount of Gain (Loss) Three Months Ended June 30, July 1, 2018 2017 Aluminum contracts Cost of sales $ — $ — Derivatives in Cash Flow Hedging Relationships Amount of Gain (Loss) Location of Gain Amount of Gain (Loss) Six Months Ended Six Months Ended June 30, July 1, June 30, July 1, 2018 2017 2018 2017 Aluminum contracts $ (473 ) $ — Cost of sales $ 43 $ — Location of Gain (Loss) Recognized in Income on Amount of Gain (Loss) Six Months Ended June 30, July 1, 2018 2017 Aluminum contracts Cost of sales $ — $ —

Accumulated Other Comprehensi31

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The following table shows the components of accumulated other comprehensive loss for the three and six months ended June 30, 2018: Aluminum Three months ended June 30, 2018 Forward (in thousands) Contracts Balance at March 31, 2018 $ (62 ) Other comprehensive loss (390 ) Amounts reclassified from other comprehensive loss (43 ) Tax effect 111 Net current-period other comprehensive loss (322 ) Balance at June 30, 2018 $ (384 ) Aluminum Six months ended June 30, 2018 Forward (in thousands) Contracts Balance at December 30, 2017 $ — Other comprehensive loss before reclassification (473 ) Amounts reclassified from other comprehensive loss (43 ) Tax effect 132 Net current-period other comprehensive loss (384 ) Balance at June 30, 2018 $ (384 )

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Sales related in excess of billing	$ 169,269	$ 137,384	$ 309,522	$ 250,105
Adoption of Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net decrease in accumulated deficit	$ (1,900)		(1,900)
Sales related in excess of billing			$ 8,700

Basis of Presentation - Adjustm

Basis of Presentation - Adjustment to Accumulated Deficit (Detail) - Adoption of Accounting Standards Update 2014-09 [Member] - Difference between Revenue Guidance in Effect before and after Topic 606 [Member] $ in Thousands	Dec. 31, 2017USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of a change in accounting principle on net income	$ 1,883
Net Sales [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of a change in accounting principle on net income	8,704
Inventory Classified as Cost of Sales [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of a change in accounting principle on net income	(5,642)
Selling, General and Administrative Expenses [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of a change in accounting principle on net income	(532)
Income Tax Expense [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effect of a change in accounting principle on net income	$ (647)

Basis of Presentation - Revenue

Basis of Presentation - Revenue Recognition (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Mar. 31, 2018	Dec. 31, 2017	Dec. 30, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	$ 169,269	$ 137,384	$ 309,522	$ 250,105
Cost of sales	109,322	92,831	204,802	173,813
Gross profit	59,947	44,553	104,720	76,292
Selling, general and administrative expenses	32,581	24,650	61,238	47,435
Gains on transfers of assets	(2,551)		(2,551)
Income from operations	29,917	19,903	46,033	28,857
Interest expense, net	3,609	4,568	7,652	9,478
Debt extinguishment costs			3,079
Income before income taxes	26,308	15,335	35,302	19,379
Income tax expense	3,760	5,080	5,414	6,125
Net income	$ 22,548	$ 10,255	$ 29,888	$ 13,254
Basic	$ 0.45	$ 0.21	$ 0.60	$ 0.27
Diluted	$ 0.43	$ 0.20	$ 0.57	$ 0.26
Comprehensive income	$ 22,226	$ 10,255	$ 29,504	$ 13,254
Cash and cash equivalents	63,923	$ 50,282	63,923	$ 50,282		$ 34,029	$ 34,029	$ 39,210
Accounts receivable, net	74,970		74,970				60,308
Inventories	35,326		35,326				37,816
Contract assets, net	11,012		11,012
Prepaid expenses	2,757		2,757				2,490
Other current assets	7,899		7,899				9,873
Total current assets	195,887		195,887				144,516
Property, plant and equipment, net	93,433		93,433				84,133
Trade name and other intangible assets, net	111,725		111,725				115,043
Goodwill	108,060		108,060				108,060
Other assets, net	1,336		1,336				1,367
Total assets	510,441		510,441				453,119
Accounts payable and accrued liabilities	45,911		45,911				41,085
Current portion of long-term debt	303		303				294
Total current liabilities	46,214		46,214				41,379
Long-term debt, less current portion	215,081		215,081				212,679
Deferred income taxes	23,287		23,287				22,772
Other liabilities	17,015		17,015				964
Total liabilities	301,597		301,597				277,794
Total shareholders' equity	208,844		208,844				175,325
Total liabilities and shareholders' equity	510,441		510,441				$ 453,119
Adoption of Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales			8,700
Contract assets, net	11,012		11,012		$ 9,210	$ 8,176
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Adoption of Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	(1,987)		(2,952)
Cost of sales	(1,459)		(1,886)
Gross profit	(528)		(1,066)
Selling, general and administrative expenses	100		185
Income from operations	(428)		(881)
Income before income taxes	(428)		(881)
Income tax expense	(108)		(225)
Net income	(320)		(656)
Comprehensive income	(320)		(656)
Inventories	7,528		7,528
Contract assets, net	(11,012)		(11,012)
Total current assets	(3,484)		(3,484)
Total assets	(3,484)		(3,484)
Accounts payable and accrued liabilities	(298)		(298)
Total current liabilities	(298)		(298)
Deferred income taxes	647		647
Total liabilities	(945)		(945)
Total shareholders' equity	(2,539)		(2,539)
Total liabilities and shareholders' equity	(3,484)		(3,484)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Adoption of Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net sales	167,282		306,570
Cost of sales	107,863		202,916
Gross profit	59,419		103,654
Selling, general and administrative expenses	32,481		61,053
Gains on transfers of assets	(2,551)		(2,551)
Income from operations	29,489		45,152
Interest expense, net	3,609		7,652
Debt extinguishment costs			3,079
Income before income taxes	25,880		34,421
Income tax expense	3,652		5,189
Net income	$ 22,228		$ 29,232
Basic	$ 0.44		$ 0.58
Diluted	$ 0.43		$ 0.56
Comprehensive income	$ 21,906		$ 28,848
Cash and cash equivalents	63,923		63,923
Accounts receivable, net	74,970		74,970
Inventories	42,854		42,854
Prepaid expenses	2,757		2,757
Other current assets	7,899		7,899
Total current assets	192,403		192,403
Property, plant and equipment, net	93,433		93,433
Trade name and other intangible assets, net	111,725		111,725
Goodwill	108,060		108,060
Other assets, net	1,336		1,336
Total assets	506,957		506,957
Accounts payable and accrued liabilities	45,613		45,613
Current portion of long-term debt	303		303
Total current liabilities	45,916		45,916
Long-term debt, less current portion	215,081		215,081
Deferred income taxes	22,640		22,640
Other liabilities	17,015		17,015
Total liabilities	300,652		300,652
Total shareholders' equity	206,305		206,305
Total liabilities and shareholders' equity	$ 506,957		$ 506,957

Revenue Recognition and Contr35

Revenue Recognition and Contracts with Customers - Revenue Based on Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Product Information [Line Items]
Net sales	$ 169,269	$ 137,384	$ 309,522	$ 250,105
Percentage of net sales	100.00%		100.00%
Impact-Resistant Windows and Door Products [Member]
Product Information [Line Items]
Net sales	$ 146,800		$ 267,300
Percentage of net sales	86.70%		86.40%
Non-Impact Window and Door Products [Member]
Product Information [Line Items]
Net sales	$ 22,500		$ 42,200
Percentage of net sales	13.30%		13.60%

Revenue Recognition and Contr36

Revenue Recognition and Contracts with Customers - Contract Asset and Liability Balances (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Contract with Customer, Asset and Liability [Line Items]
Contract Assets Net, beginning balance	$ 11,012	$ 11,012
Contract Assets Net, ending balance	11,012	11,012
Adoption of Accounting Standards Update 2014-09 [Member]
Contract with Customer, Asset and Liability [Line Items]
Contract Assets, beginning balance	11,656	11,656	$ 9,669	$ 8,704
Net increase	1,987	2,952
Contract Liabilities, beginning balance	(644)	(644)	(459)	(528)
Net increase	(185)	(116)
Contract Assets Net, beginning balance	11,012	11,012	9,210	8,176
Net increase	1,802	2,836
Contract Assets, ending balance	11,656	11,656	9,669	8,704
Contract Liabilities, ending balance	(644)	(644)	(459)	(528)
Contract Assets Net, ending balance	$ 11,012	$ 11,012	$ 9,210	$ 8,176

Revenue Recognition and Contr37

Revenue Recognition and Contracts With Customers - Additional information (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Contract assets, net	$ 11,012
Backlog	35,884	$ 39,202
Order or Production Backlog [Member]
Backlog	$ 98,900

Warranty - Additional Informati

Warranty - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Product Warranty Liability [Line Items]
Warranty expense, average rate of sales	1.70%	2.20%	1.70%	2.20%
Minimum [Member]
Product Warranty Liability [Line Items]
Warranty periods			1 year
Warranty period of the majority of products sold			1 year
Maximum [Member]
Product Warranty Liability [Line Items]
Warranty periods			10 years
Warranty period of the majority of products sold			3 years

Warranty - Summary of Current P

Warranty - Summary of Current Period Charges, Adjustments to Previous Estimates, Settlements representing Actual Costs Incurred with regard to Accrued Warranty (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Guarantees and Product Warranties [Abstract]
Accrued Warranty, Beginning of Period	$ 5,323	$ 5,614	$ 5,386	$ 5,569
Accrued Warranty, Charged to Expense	2,851	3,045	5,217	6,088
Accrued Warranty, Adjustments	(98)	(153)	(208)	(64)
Accrued Warranty, Settlements	(2,708)	(2,827)	(5,027)	(5,914)
Accrued Warranty, End of Period	$ 5,368	$ 5,679	$ 5,368	$ 5,679

Inventories - Inventories (Deta

Inventories - Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 32,811	$ 30,139
Work-in-progress	2,515	2,506
Finished goods		5,171
Inventories	$ 35,326	$ 37,816

Stock Based-Compensation - Addi

Stock Based-Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands	May 17, 2018Members$ / sharesshares	Mar. 02, 2018$ / sharesshares	Jun. 30, 2018USD ($)$ / sharesshares	Jul. 01, 2017USD ($)	Jun. 30, 2018USD ($)$ / sharesshares	Jul. 01, 2017USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercised			694,423		780,972
Weighted average exercise price of options exercised | $ / shares			$ 2		$ 2
Compensation expense for stock based awards | $			$ 700	$ 600	$ 1,198	$ 1,037
Total unrecognized compensation cost related primarily to restricted share awards | $			$ 3,700		$ 3,700
Weighted average remaining period of stock option					1 year 8 months 12 days
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards	30,456
Fair value of common stock | $ / shares	$ 18.65
Number of non management members | Members	8
Restricted Stock Award [Member] | Executives and Non-Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards		139,182
Fair value of common stock | $ / shares		$ 18.40
Company Performance Criteria [Member] | Executives and Non-Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards		69,591
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance criteria defined in share awards					The performance percentages, ranging from less than 80% to greater than 120%, provide for the awarding of shares ranging from no shares to 150% of the original number of shares.
Fixed Criteria [Member] | Executives and Non-Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards		69,591
Options vesting period		3 years

Net Income Per Common Share - A

Net Income Per Common Share - Additional Information (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Options and Restricted Stock Awards [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive securities	0	20	0	20

Net Income Per Common Share - C

Net Income Per Common Share - Calculation of EPS and Reconciliation of Weighted Average Common Shares Used in Calculation of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Earnings Per Share [Abstract]
Net income	$ 22,548	$ 10,255	$ 29,888	$ 13,254
Weighted-average common shares - Basic	50,317	49,473	50,087	49,368
Add: Dilutive effect of stock compensation plans	1,739	2,191	1,936	2,239
Weighted-average common shares - Diluted	52,056	51,664	52,023	51,607
Net income per common share:
Basic	$ 0.45	$ 0.21	$ 0.60	$ 0.27
Diluted	$ 0.43	$ 0.20	$ 0.57	$ 0.26

Sale of Assets - Additional Inf

Sale of Assets - Additional Information (Detail) - USD ($)	Jun. 08, 2018	Mar. 01, 2018	Jan. 16, 2018	Jan. 15, 2018	Nov. 01, 2017	Sep. 22, 2017	Jun. 30, 2018	Jun. 30, 2018	Jul. 01, 2017	Dec. 15, 2017
Business Acquisition [Line Items]
Proceeds from sale of manufacturing equipment								$ 5,820,000	$ 57,000
Gain on disposals of assets								2,609,000	$ 57,000
Cardinal [Member] | Asset Purchase Agreement [Member] | Manufacturing Equipment [Member]
Business Acquisition [Line Items]
Proceeds from sale of manufacturing equipment	$ 14,800,000	$ 15,000,000	$ 10,000,000	$ 10,000,000	$ 3,000,000	$ 28,000,000		27,800,000
Asset supply agreement term						7 years
Property, plant and equipment, fair market value							$ 5,800,000	5,800,000		$ 1,900,000
Deferred income						$ 20,300,000
Payment amortized under supply agreement term						7 years
Net book value of assets held for sale							3,200,000	3,200,000		$ 1,500,000
Amount received less than specified in APA								200,000
Cardinal [Member] | Asset Purchase Agreement [Member] | Manufacturing Equipment [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Gain on disposals of assets							2,600,000
Cardinal [Member] | Asset Purchase Agreement [Member] | Manufacturing Equipment [Member] | Other Current Assets [Member]
Business Acquisition [Line Items]
Property, plant and equipment, fair market value						$ 7,700,000
Net book value of assets held for sale						$ 4,700,000
Cardinal [Member] | Supply Agreement [Member]
Business Acquisition [Line Items]
Unamortized balance of deffred gain							18,300,000	18,300,000
Cardinal [Member] | Supply Agreement [Member] | Inventory Classified as Cost of Sales [Member]
Business Acquisition [Line Items]
Amortization of deferred gain							702,000	1,400,000
Cardinal [Member] | Supply Agreement [Member] | Accrued Liabilities [Member]
Business Acquisition [Line Items]
Unamortized balance of deffred gain							2,800,000	2,800,000
Cardinal [Member] | Supply Agreement [Member] | Other Liabilities [Member]
Business Acquisition [Line Items]
Unamortized balance of deffred gain							$ 15,500,000	$ 15,500,000

Goodwill, Trade Names, and Ot45

Goodwill, Trade Names, and Other Intangible Assets - Schedule of Trade Names and Other Intangible Assets Net (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 30, 2017
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 108,060	$ 108,060
Less: Accumulated amortization	(76,021)	(72,703)
Subtotal	35,884	39,202
Other intangible assets, net	111,725	115,043
Trade Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets	75,841	75,841
Customer Relationships [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets	$ 106,647	106,647
Customer Relationships [Member] | Minimum [Member]
Indefinite-lived Intangible Assets [Line Items]
Initial Useful Life (in years)	3 years
Customer Relationships [Member] | Maximum [Member]
Indefinite-lived Intangible Assets [Line Items]
Initial Useful Life (in years)	10 years
Developed Technology [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets	$ 3,000	3,000
Developed Technology [Member] | Minimum [Member]
Indefinite-lived Intangible Assets [Line Items]
Initial Useful Life (in years)	9 years
Developed Technology [Member] | Maximum [Member]
Indefinite-lived Intangible Assets [Line Items]
Initial Useful Life (in years)	10 years
Noncompete Agreements [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets	$ 1,668	1,668
Noncompete Agreements [Member] | Minimum [Member]
Indefinite-lived Intangible Assets [Line Items]
Initial Useful Life (in years)	2 years
Noncompete Agreements [Member] | Maximum [Member]
Indefinite-lived Intangible Assets [Line Items]
Initial Useful Life (in years)	5 years
Software License [Member]
Indefinite-lived Intangible Assets [Line Items]
Intangible assets	$ 590	$ 590
Initial Useful Life (in years)	2 years

Goodwill, Trade Names, and Ot46

Goodwill, Trade Names, and Other Intangible Assets - Estimated Amortization for Future Fiscal Year (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2018	$ 3,317
2,019	6,430
2,020	6,278
2,021	5,974
2,022	5,116
Thereafter	8,769
Subtotal	$ 35,884	$ 39,202

Long Term Debt - Schedule of Lo

Long Term Debt - Schedule of Long-term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017	Jul. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 224,287	$ 224,000
Fees, costs and original issue discount	(8,903)	(11,460)
Long-term debt	215,384	212,973
Less current portion of long-term debt	(303)	(294)
Long-term debt, less current portion	215,081	212,679
Term Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt	224,000
Term Notes Payable [Member] | 2016 Credit Agreement [Member]
Debt Instrument [Line Items]
Long-term debt	223,975	223,975
Financing Arrangement [Member]
Debt Instrument [Line Items]
Long-term debt	$ 312	$ 458	$ 590

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail)	Mar. 16, 2018	Feb. 16, 2016USD ($)	Mar. 16, 2018	Jul. 31, 2017USD ($)Installment	Jun. 30, 2018USD ($)	Dec. 30, 2017USD ($)
Line of Credit Facility [Line Items]
Debt extinguishment cost					$ 3,079,000
Letters of credit outstanding					$ 1,200,000
Minimum percentage of revolving credit facility as per financial covenant					20.00%
Long term debt					$ 224,287,000	$ 224,000,000
LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR			4.75%
Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR			3.75%
Financing Arrangement [Member]
Line of Credit Facility [Line Items]
Long term debt				$ 590,000	312,000	$ 458,000
Debt Instrument, Interest Rate, Stated Percentage				6.00%
Debt Instrument, Number of installments | Installment				24
Debt Instrument, Installment Amount				$ 26,000
Term Notes Payable [Member]
Line of Credit Facility [Line Items]
Long term debt					$ 224,000,000
Senior Secured Credit Facilities [Member]
Line of Credit Facility [Line Items]
Amount available under credit facility		$ 310,000,000
Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Amount available under credit facility		$ 270,000,000
Maturity term of credit agreement		6 years
Credit facility amortization percentage		1.00%
Weighted average interest rate					5.59%	5.75%
Term Loan Facility [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR			1.00%
Term Loan Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR			2.00%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Amount available under credit facility		$ 40,000,000
Maturity term of credit agreement		5 years
Credit facility amortization percentage					0.50%
Credit available on revolver					$ 38,800,000
Letter Of Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility amortization percentage					5.75%
Facing fee per annum					0.125%
2016 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Interest rate terms					The Second Amendment, among other things, decreases the applicable interest rate margins for the Initial Term Loans (as defined in the Credit Agreement) from (i) 3.75% to 2.50%, in the case of the Base Rate Loans (as defined in the Credit Agreement), and (ii) 4.75% to 3.50%, in the case of the Eurodollar Loans (as defined in the Credit Agreement).
Credit agreement date					Feb. 16, 2016
Accrued interest					$ 100,000
Voluntary prepayment of debt		$ 44,000,000
2016 Credit Agreement [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR	2.50%					3.75%
2016 Credit Agreement [Member] | Eurodollar [Member]
Line of Credit Facility [Line Items]
Basis spread on LIBOR	3.50%					4.75%
2016 Credit Agreement [Member] | Term Notes Payable [Member]
Line of Credit Facility [Line Items]
Long term debt					$ 223,975,000	$ 223,975,000
2014 Credit Agreement [Member]
Line of Credit Facility [Line Items]
Credit agreement date					Sep. 22, 2014

Long-Term Debt - Activity Relat

Long-Term Debt - Activity Relating to Third-Party Fees and Costs, Lender Fees and Discount (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)
Debt Disclosure [Abstract]
At beginning of year	$ 11,460
Amortization expense through March 16, 2018	(520)
Add: Second amendment refinancing costs	1,687
Less: Debt extinguishment costs	(3,079)
Less: Amortization expense after refinancing	(645)
At end of period	$ 8,903

Long-Term Debt - Estimated Amor

Long-Term Debt - Estimated Amortization Expense Relating to Third-Party Fees and Costs, Lender Fees and Discount (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Remainder of 2018	$ 1,126
2,019	2,368
2,020	2,584
2,021	2,506
2,022	319
Total	$ 8,903	$ 10,940

Long-Term Debt - Contractual Fu

Long-Term Debt - Contractual Future Maturities of Long-Term Debt Outstanding, Including Other Debt Relating to Software License Financing Arrangement (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 30, 2017
Debt Disclosure [Abstract]
Remainder of 2018	$ 148
2,019	164
2,020	0
2,021	0
2,022	223,975
Total	$ 224,287	$ 224,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Dec. 22, 2017	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Income Taxes [Line Items]
Income tax expense		$ 3,760,000	$ 5,080,000	$ 5,414,000	$ 6,125,000
Effective tax rates	25.60%	14.30%	33.10%	15.30%	31.60%
Income tax expense, discrete item		$ 3,000,000	$ 407,000
Effective tax rates, excluding discrete item		25.80%	35.80%	25.60%	35.70%
Effective income tax rate reconciliation, change in enacted tax rate, percent				38.80%
Payment of estimated federal income taxes			$ 0		$ 0	$ 9,000,000
Refund of federal income taxes			$ 0		$ 0
Domestic Country [Member]
Income Taxes [Line Items]
Payment of estimated federal income taxes				$ 1,200,000
Florida [Member]
Income Taxes [Line Items]
Payment of estimated federal income taxes				$ 1,800,000
Other Current Liabilities [Member] | Federal and State [Member]
Income Taxes [Line Items]
Federal income taxes payable						$ 6,500,000

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Debt Instrument Fair Value Carrying Value [Abstract]
Fair value of assets, level 2 to level 3 transfers	$ 0	$ 0
Fair value of current long-term debt	225,700,000		$ 227,300,000
Principal outstanding value	$ 224,287,000		$ 224,000,000

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Detail) $ in Thousands	Jun. 30, 2018USD ($)
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value, net asset (liability)	$ (516)
Aluminum Forward Contracts [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value, net asset (liability)	(516)
Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value, net asset (liability)	(516)
Significant Other Observable Inputs (Level 2) [Member] | Aluminum Forward Contracts [Member]
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value, net asset (liability)	$ (516)

Derivatives - Additional Inform

Derivatives - Additional Information (Detail) $ in Thousands, lb in Millions	Jun. 30, 2018USD ($)ForwardContractslb$ / Pounds	Jun. 30, 2018USD ($)ForwardContractslb$ / Pounds	Dec. 30, 2017ForwardContracts
Derivative [Line Items]
Derivative liabilities, net	$ 644	$ 644
Fair Value of Derivative		224
Aluminum Contracts [Member]
Derivative [Line Items]
Derivative liabilities, net	$ 516	$ 516
Number of outstanding forward contracts | ForwardContracts	19	19	0
Derivative, amount of hedged item | lb	18.6	18.6
Derivative average price | $ / Pounds	1	1
Maturity period of contract, minimum	1 month
Maturity period of contract, maximum	18 months
Accumulated other comprehensive income, net of tax	$ 384	$ 384

Derivatives - Summary of Fair V

Derivatives - Summary of Fair Value of Hedges (Detail) $ in Thousands	Jun. 30, 2018USD ($)
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	$ 128
Total derivative instruments Liabilities	(644)
Aluminum Forward Contracts [Member] | Accrued Liabilities [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Liabilities	(352)
Aluminum Forward Contracts [Member] | Other Liabilities [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Liabilities	(292)
Aluminum Forward Contracts [Member] | Other Current Assets [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	$ 128

Derivatives - Gains (Losses) on

Derivatives - Gains (Losses) on Derivative Financial Instruments (Detail) - Aluminum Contracts [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Inventory Classified as Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ (390)		$ (473)
Amount of Loss Reclassified from Accumulated OCI into Income (Effective Portion)	43		43
Other Expense, net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion)	$ 0	$ 0	$ 0	$ 0

Accumulated Other Comprehensi58

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		$ 175,325
Ending Balance	$ 208,844	208,844
Aluminum Forward Contracts [Member]
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive loss	(390)	(473)
Amounts reclassified from other comprehensive loss	(43)	(43)
Tax effect	111	132
Net current-period other comprehensive loss	(322)	(384)
Aluminum Forward Contracts [Member] | Accumulated Other Comprehensive Loss [Member]
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(62)
Ending Balance	$ (384)	$ (384)

Subsequent Event - Addtional In

Subsequent Event - Addtional Information (Detail) - Definitive Agreement [Member] - Subsequent Event [Member] - Western Window Systems [Member] $ in Millions	Jul. 24, 2018USD ($)
Subsequent Event [Line Items]
Acquisition of cash	$ 360
Incremental debt	$ 315