Ichor (ICHR) 10-Q 13 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 29, 2017	Nov. 06, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 29, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	ICHR
Entity Registrant Name	ICHOR HOLDINGS, LTD.
Entity Central Index Key	1,652,535
Current Fiscal Year End Date	--12-29
Entity Filer Category	Non-accelerated Filer
Entity Ordinary Shares Outstanding		25,588,872

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 29, 2017	Dec. 30, 2016
Current assets:
Cash	$ 41,987	$ 50,854
Restricted cash	861	1,794
Accounts receivable, net	59,351	26,401
Inventories, net	110,632	70,881
Prepaid expenses and other current assets	3,617	7,061
Current assets from discontinued operations	21	99
Total current assets	216,469	157,090
Property and equipment, net	16,748	12,018
Other noncurrent assets	1,677	3,574
Deferred tax assets	1,388	570
Intangible assets, net	38,468	32,146
Goodwill	95,028	77,093
Total assets	369,778	282,491
Current liabilities:
Accounts payable	91,553	88,531
Accrued liabilities	7,179	6,554
Other current liabilities	5,897	5,421
Current portion of long-term debt	1,180
Current liabilities from discontinued operations	626	564
Total current liabilities	106,435	101,070
Long-term debt, less current portion, net	66,562	37,944
Deferred tax liabilities	440	606
Other non-current liabilities	2,516	1,173
Non-current liabilities from discontinued operations	31	39
Total liabilities	175,984	140,832
Shareholders’ equity
Preferred shares ($0.0001 par value; 20,000,000 shares authorized; no shares issued and outstanding)
Ordinary shares ($0.0001 par value; 200,000,000 shares authorized; 25,537,585 and 23,857,381 shares issued and outstanding, respectively)	3	2
Additional paid in capital	211,193	196,049
Accumulated deficit	(17,402)	(54,392)
Total shareholders’ equity	193,794	141,659
Total liabilities and shareholders’ equity	$ 369,778	$ 282,491

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 29, 2017	Dec. 30, 2016
Statement Of Financial Position [Abstract]
Preferred shares, par value	$ 0.0001	$ 0.0001
Preferred shares, authorized	20,000,000	20,000,000
Preferred shares, Issued	0	0
Preferred shares, outstanding	0	0
Ordinary shares, par value	$ 0.0001	$ 0.0001
Ordinary shares, authorized	200,000,000	200,000,000
Ordinary shares, issued	25,537,585	23,857,381
Ordinary shares, outstanding	25,537,585	23,857,381

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Net sales	$ 164,519	$ 105,687	$ 472,956	$ 274,339
Cost of sales	140,323	88,802	401,239	230,349
Gross profit	24,196	16,885	71,717	43,990
Operating expenses:
Research and development	1,992	1,564	5,686	4,229
Selling, general, and administrative	11,430	6,782	26,272	20,329
Amortization of intangible assets	2,220	1,804	5,818	5,210
Total operating expenses	15,642	10,150	37,776	29,768
Operating income	8,554	6,735	33,941	14,222
Interest expense, net	739	1,183	2,104	3,245
Other expense (income), net	73	(241)	(325)	(384)
Income from continuing operations before income taxes	7,742	5,793	32,162	11,361
Income tax benefit from continuing operations	(6,556)	(1,888)	(5,558)	(1,427)
Net income from continuing operations	14,298	7,681	37,720	12,788
Discontinued operations:
Income (loss) from discontinued operations before taxes		16	(721)	(4,013)
Income tax expense from discontinued operations	8	23	9	26
Net loss from discontinued operations	(8)	(7)	(730)	(4,039)
Net income	14,290	7,674	36,990	8,749
Less: Undistributed earnings attributable to preferred shareholders		(7,628)		(8,707)
Net income attributable to ordinary shareholders	$ 14,290	$ 46	$ 36,990	$ 42
Net income per share from continuing operations attributable to ordinary shareholders, Basic	$ 0.57	$ 0.43	$ 1.51	$ 0.72
Net income per share from continuing operations attributable to ordinary shareholders, Diluted	0.54	0.08	1.45	0.16
Net income per share attributable to ordinary shareholders, Basic	0.57	0.43	1.48	0.49
Net income per share attributable to ordinary shareholders, Diluted	$ 0.54	$ 0.08	$ 1.42	$ 0.11
Shares used to compute net income per share attributable to ordinary shareholders:
Shares used to compute net income per share attributable to ordinary shareholders, Basic	25,267,113	106,082	24,923,298	85,781
Shares used to compute net income per share attributable to ordinary shareholders, Diluted	26,278,147	542,949	26,008,346	380,501
Continuing Operations
Shares used to compute net income per share attributable to ordinary shareholders:
Shares used to compute net income per share attributable to ordinary shareholders, Basic	25,267,113	106,082	24,923,298	85,781
Shares used to compute net income per share attributable to ordinary shareholders, Diluted	26,278,147	542,949	26,008,346	380,501

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - 9 months ended Sep. 29, 2017 - USD ($) $ in Thousands	Total	Ordinary Shares	Additional Paid-in Capital	Accumulated Deficit
Balance at Dec. 30, 2016	$ 141,659	$ 2	$ 196,049	$ (54,392)
Balance, Shares at Dec. 30, 2016		23,857,381
Ordinary shares issued from initial public offering, net of transaction costs	7,278	$ 1	7,277
Ordinary shares issued from initial public offering, net of transaction costs, shares		881,667
Ordinary shares issued from exercise of stock options	6,331		6,331
Ordinary shares issued from exercise of stock options, shares		740,472
Ordinary shares issued from vesting of restricted share units, Shares		58,065
Share-based compensation expense	1,536		1,536
Net income	36,990			36,990
Balance at Sep. 29, 2017	$ 193,794	$ 3	$ 211,193	$ (17,402)
Balance, Shares at Sep. 29, 2017		25,537,585

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016
Cash flows from operating activities:
Net income	$ 36,990	$ 8,749
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,351	7,049
Gain on sale of investments and settlement of note receivable	(241)
Share-based compensation	1,536	1,345
Deferred income taxes	(6,207)	(2,485)
Amortization of debt issuance costs	412	395
Changes in operating assets and liabilities, net of assets acquired:
Accounts receivable, net	(22,632)	(13,420)
Inventories	(18,915)	(10,236)
Prepaid expenses and other assets	4,112	(2,065)
Accounts payable	(2,081)	15,657
Accrued liabilities	(1,280)	1,397
Other liabilities	881	(2,361)
Net cash provided by operating activities	926	4,025
Cash flows from investing activities:
Capital expenditures	(6,609)	(2,253)
Cash paid for acquisitions, net of cash acquired	(49,542)	(17,406)
Proceeds from sale of intangible assets		230
Proceeds from sale of property, plant, and equipment		243
Proceeds from sale of investments and settlement note receivable	2,430
Net cash used in investing activities	(53,721)	(19,186)
Cash flows from financing activities:
Issuance of ordinary shares, net of fees	7,278
Proceeds from exercise of stock options	6,331
Debt issuance and modification costs	(319)
Borrowings under revolving commitment	10,000	12,000
Repayments on revolving commitment		(7,000)
Borrowing on long-term debt	20,000	15,000
Repayments on long-term debt	(295)	(3,723)
Net cash provided by financing activities	42,995	16,277
Net increase (decrease) in cash	(9,800)	1,116
Cash and restricted cash at beginning of year	52,648	24,188
Cash and restricted cash at end of quarter	42,848	25,304
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	2,518	2,628
Cash paid (refunded) during the period for taxes	150	(129)
Supplemental disclosures of non-cash activities:
Capital expenditures included in accounts payable	$ 267	$ 197

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 29, 2017
Accounting Policies [Abstract]
Basis of Presentation	Note 1 – Basis of Presentation Basis of Presentation These consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (“GAAP”). All intercompany balances and transactions have been eliminated upon consolidation. All financial figures presented in the notes to consolidated financial statements are in thousands, except share, per share, and percentage figures. Year End We use a 52 or 53 week fiscal year ending on the last Friday in December. The three months ended September 29, 2017 and September 23, 2016 were both 13 weeks. The nine months ended September 29, 2017 and September 23, 2016 were both 39 weeks. References to the third quarter of 2017 and 2016 relate to the three months ended September 29, 2017 and September 23, 2016, respectively. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods presented. The Company bases its estimates and judgments on historical experience and on various other assumptions that it believes are reasonable under the circumstances. Actual results could differ from the estimates made by management. Significant estimates include the fair value of assets and liabilities acquired in acquisitions, estimated useful lives for long‑lived assets, allowance for doubtful accounts, inventory valuation, uncertain tax positions, fair value assigned to stock options granted, and impairment analysis for both definite‑lived intangible assets and goodwill. Correction of an Immaterial Error During the second quarter of 2017, we corrected an error related to translating the inventory balances at our Malaysia and Singapore subsidiaries at an incorrect foreign currency rate. The error arose in prior period financial statements beginning in periods prior to 2014 and through 2016. The correction resulted in a $1,752 increase in cost of sales and a corresponding decrease in gross profit in our consolidated statements of operations and a decrease to inventories in our consolidated balances sheet during the second quarter of 2017. We evaluated the error on both a quantitative and qualitative basis and determined that the error was not material and did not affect the trend of net income or cash flows in previously issued financial statements. Additionally, we determined that correcting the error in the second quarter of 2017 is not expected to have a material impact to our consolidated financial statements for the fiscal year ended December 29, 2017. Accounting Pronouncements Recently Issued In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014‑09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014‑09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014‑09 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. In August 2015, the FASB issued ASU No. 2015‑14, Revenue from Contracts with Customers (Topic 606) – Deferral of the Effective Date (“ASU 2015‑14”), which defers the effective date of ASU 2014‑09 for one year and permits early adoption in accordance with the original effective date of ASU 2014‑09. The standard is effective for the Company beginning in the first quarter of the fiscal year ending December 28, 2018. During the third quarter of 2017 the Company made progress toward completing the evaluation of potential changes from adopting the new standard on its financial statements and disclosures. The Company is still evaluating the impact of the standard on its revenue streams and significant contracts. At this point in time the Company does not anticipate a material impact from the adoption of this standard. However, the final determination is not known at this time, as it is dependent on the number, size, and complexity of contracts not fully evaluated at this time. In February 2016, the FASB issued ASU No. 2016‑02, Leases (Topic 842) (“ASU 2016‑02”), which establishes a comprehensive lease standard for all industries. The standard requires lessees to recognize a right of use asset and a lease liability for virtually all leases, other than leases that meet the definition of short term leases. The standard is effective for the Company beginning in the first quarter of the fiscal year ending December 27, 2019. The Company is currently evaluating the impact of this accounting standard. In January 2017, the FASB issued ASU No. 2017‑04, Intangibles—Goodwill and Other (Topic 350) (“ASU 2017‑04”), which eliminates the requirement to perform Step 2 of the goodwill impairment test . Under ASU 2017‑04, goodwill impairment testing will be performed by comparing the fair value of the reporting unit with its carrying amount and recognizing an impairment charge, if any, for the amount a reporting unit’s carrying amount exceeds its fair value. The standard is effective for goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. The Company does not expect this standard to have a significant impact on its financial statements.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 29, 2017
Business Combinations [Abstract]
Acquisitions	Note 2 –Acquisitions Cal-Weld, Inc. On July 27, 2017, the Company completed the acquisition of Cal‑Weld, Inc. (“Cal‑Weld”), a California-based leader in the design and fabrication of precision, high purity industrial components, subsystems, and systems, for $56,879. Pursuant to the purchase agreement, the Company placed $6,000 in escrow for indemnification and working capital claims. As of September 29, 2017, the Company has submitted a working capital claim to the seller of $959 which was agreed to and settled subsequent to quarter-end. The Company does not anticipate any further adjustments and expects the remaining amount in escrow to be ultimately transferred to the seller. Accordingly, the remaining amount in escrow is included in the total acquisition consideration. Cal‑Weld will expand the Company’s capacity and capabilities in the area of component manufacturing for Gas Delivery tools used in semiconductor manufacturing. The following table presents the preliminary purchase price allocation as of July 27, 2017: Preliminary Allocation July 27, 2017 Cash acquired $ 7,337 Accounts receivable, net 10,318 Inventories 20,836 Prepaid expenses and other current assets 287 Property and equipment, net 1,639 Other noncurrent assets 587 Intangible assets, net 12,140 Goodwill 17,957 Accounts payable and accrued liabilities (8,007 ) Other non-current liabilities (908 ) Deferred tax liabilities (5,307 ) Total acquisition consideration $ 56,879 The Company allocated $11,480 to customer relationships and $660 to order backlog with weighted average amortization periods of 10 years and 6 months, respectively. Goodwill recognized from the acquisition of Cal‑Weld was primarily attributed to an assembled workforce and expected synergies and is not tax deductible. The allocation of acquisition consideration for Cal‑Weld is preliminary as we have not obtained all of the information to finalize the opening balance sheet or the allocation between goodwill and intangible assets. Management has recorded allocations based on information currently available. The Company incurred transaction costs of $1,498 and $1,712 in connection with the acquisition of Cal‑Weld during the three and nine months ended September 29, 2017, respectively. The Company’s consolidated financial statements for the third quarter of 2017 include approximately two months of Cal‑Weld operating activity. Included in the Company’s statements of operations for the third quarter of 2017 are net sales and net income from continuing operations of $23,389 and $1,391, respectively, attributable to Cal‑Weld. The following unaudited pro forma consolidated results of operations assume the acquisition was completed on December 26, 2015, the beginning of the earliest period presented. Pro forma adjustments are mainly comprised of amortization expense related to acquired intangible assets, compensation-related costs attributed to non-retained previous ownership, acquisition-related costs, incremental interest expense from increased borrowings to fund the acquisition, acquired inventory fair value charges, and the related income tax effects. The inventory fair value adjustment resulted in a $3,594 charge to cost of sales for the nine months ended September 23, 2016. The pro forma results of operations are presented for informational purposes only and are not indicative of the results of operations that would have been achieved or of results that may occur in the future: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Net sales $ 173,091 $ 125,980 $ 542,145 $ 335,217 Net income from continuing operations $ 15,914 $ 9,596 $ 45,258 $ 14,940 Net income per share from continuing operations attributable to ordinary shareholders: Basic $ 0.61 $ 0.54 $ 1.79 $ 0.86 Diluted $ 0.59 $ 0.10 $ 1.72 $ 0.19 Ajax‑United Patterns & Molds, Inc. On April 12, 2016, the Company completed the acquisition of Ajax‑United Patterns & Molds, Inc. (“Ajax”), a California-based manufacturer of complex plastic and metal products used in the medical, biomedical, semiconductor, data communication, and food processing equipment industries, for $17,594. The following table presents the preliminary purchase price allocation as of December 30, 2016, measurement period adjustments from December 30, 2016 through April 12, 2017, and the final purchase price allocation as of April 12, 2017, the end of the measurement period. Measurement period adjustments are primarily related to finalization of the valuation of deferred tax liabilities and net identifiable assets and liabilities: Preliminary Allocation December 30, 2016 Measurement Period Adjustment Final Allocation April 12, 2017 Cash acquired $ 187 $ — $ 187 Accounts receivable, net 1,250 — 1,250 Inventories 3,236 — 3,236 Prepaid expenses and other current assets 77 8 85 Property and equipment, net 1,545 (78 ) 1,467 Other noncurrent assets 2,948 — 2,948 Intangible assets, net 8,030 — 8,030 Goodwill 7,078 (22 ) 7,056 Accounts payable and accrued liabilities (4,486 ) 9 (4,477 ) Deferred tax liabilities (2,271 ) 83 (2,188 ) Total acquisition consideration $ 17,594 $ — $ 17,594

Inventories

Inventories	9 Months Ended
	Sep. 29, 2017
Inventory Disclosure [Abstract]
Inventories	Note 3 – Inventories Inventories consist of the following: September 29, 2017 December 30, 2016 Raw materials $ 77,527 $ 46,889 Work in process 30,500 22,649 Finished goods 11,181 9,423 Excess and obsolete adjustment (8,576 ) (8,080 ) Total inventories, net $ 110,632 $ 70,881

Property and Equipment

Property and Equipment	9 Months Ended
	Sep. 29, 2017
Property Plant And Equipment [Abstract]
Property and Equipment	Note 4 – Property and Equipment Property and equipment consist of the following: September 29, 2017 December 30, 2016 Machinery $ 8,172 $ 5,243 Leasehold improvements 14,871 11,276 Computer software, hardware and equipment 4,143 2,848 Office furniture, fixtures and equipment 455 220 Vehicles 37 10 Construction-in-process 1,315 2,069 28,993 21,666 Less accumulated depreciation (12,245 ) (9,648 ) Total property and equipment, net $ 16,748 $ 12,018 Depreciation expense was $946, $624, $2,533, and $1,839 for the third quarter of 2017 and 2016 and the nine months ended September 29, 2017 and September 23, 2016, respectively.

Intangible Assets and Goodwill

Intangible Assets and Goodwill	9 Months Ended
	Sep. 29, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	Note 5 – Intangible Assets and Goodwill Definite‑lived intangible assets consist of the following: September 29, 2017 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Trademarks $ 9,690 $ (5,572 ) $ — $ 4,118 Customer relationships 62,037 (20,186 ) (11,076 ) 30,775 Developed technology 28,100 (16,810 ) (8,155 ) 3,135 Backlog 660 (220 ) — 440 Total intangible assets $ 100,487 $ (42,788 ) $ (19,231 ) $ 38,468 December 30, 2016 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Trademarks $ 9,690 $ (4,845 ) $ — $ 4,845 Customer relationships 50,557 (17,150 ) (11,076 ) 22,331 Developed technology 28,100 (14,975 ) (8,155 ) 4,970 Backlog 30 (30 ) — — Total intangible assets $ 88,377 $ (37,000 ) $ (19,231 ) $ 32,146 Amortization expense was $2,220, $1,804, $5,818, and $5,210 for the third quarter of 2017 and 2016 and the nine months ended September 29, 2017 and September 23, 2016, respectively. The following table presents changes to goodwill during the nine months ended September 29, 2017: Goodwill Balance at December 30, 2016 $ 77,093 Acquisitions 17,935 Impairment — Balance at September 29, 2017 $ 95,028

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 29, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 6 – Commitments and Contingencies Operating Leases The Company leases offices under various operating leases expiring through 2024. The Company is responsible for utilities and its proportionate share of operating expenses under the facilities’ leases. The Company recognizes escalating lease payments on a straight‑line basis over the lease term. The total obligation at September 29, 2017 is $10,726. Litigation The Company is periodically involved in legal actions and claims that arise as a result of events that occur in the normal course of operations. The ultimate resolution of these actions is not expected to have a material adverse effect on the Company’s financial position or results of operations. Purchase Commitments At September 29, 2017, the Company has purchase orders outstanding for raw materials and component parts totaling $78,903.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 29, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 – Income Taxes Information on the Company’s income taxes for the periods reported is as follows: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Income tax benefit from continuing operations $ (6,556 ) $ (1,888 ) $ (5,558 ) $ (1,427 ) Income from continuing operations before income taxes $ 7,742 $ 5,793 $ 32,162 $ 11,361 Effective income tax rate -84.7 % -32.6 % -17.3 % -12.6 % The Company’s effective tax rate for the third quarter of 2017 and 2016 and for the nine months ended September 29, 2017 and September 23, 2016 differs from the statutory rate due to a full valuation allowance provided against its U.S. net deferred tax assets, taxes on foreign income that differ from the U.S. tax rate, tax benefits created in connection with our acquisitions, accrued withholding taxes, and certain other non-recurring tax benefits. During the third quarter of 2017, we recorded a discrete tax benefit of $5,281 related to the release of a valuation allowance as a result of acquiring deferred tax liabilities in connection with our acquisition of Cal‑Weld. In addition, as a result of re‑characterizing intercompany debt to equity, a tax benefit of $1,627 was recorded during the current quarter related to the reversal of previously accrued withholding taxes. Therefore, the tax benefit recorded for the nine months ended September 29, 2017 consists primarily of these benefits offset in part by tax expense or benefit related to our foreign operations in which we conduct business and tax expense related to cash tax liabilities to be paid by U.S. subsidiaries. The ending balance for the unrecognized tax benefits for uncertain tax positions was approximately $1,644 at September 29, 2017. The related interest and penalties were $76 and $346, respectively. The uncertain tax positions that are reasonably possible to decrease in the next twelve months are insignificant. As of September 29, 2017, the Company is not under examination by tax authorities.

Employee Benefit Programs

Employee Benefit Programs	9 Months Ended
	Sep. 29, 2017
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Programs	Note 8 – Employee Benefit Programs 401(k) Plan The Company sponsors a 401(k) plan available to employees of its U.S.‑based subsidiaries. Participants may make salary deferral contributions not to exceed 50% of a participant’s compensation in a plan year or the maximum amount otherwise allowed by law. Eligible employees receive a discretionary matching contribution equal to 50% of each participant’s deferral, up to an annual maximum of two thousand five hundred dollars. Matching contributions were $97, $56, $435, and $274 for the Medical Insurance The Company sponsors a self‑insured group medical insurance plan for its U.S. employees and their dependents. The self‑insured plan is designed to provide a specified level of coverage, with stop‑loss coverage provided by a commercial insurer, in order to limit the Company’s exposure. Expense incurred related to this plan was $612, $615, $2,028, and $1,824 for the

Credit Facilities

Credit Facilities	9 Months Ended
	Sep. 29, 2017
Debt Disclosure [Abstract]
Credit Facilities	Note 9 – Credit Facilities Long‑term debt consists of the following: September 29, 2017 December 30, 2016 Term loan facility $ 59,535 $ 39,830 Revolving credit facility 10,000 — Total principal amount of long-term debt 69,535 39,830 Less unamortized debt issuance costs (1,793 ) (1,886 ) Total long-term debt, net 67,742 37,944 Less current portion (1,180 ) — Total long-term debt, less current portion, net $ 66,562 $ 37,944 2015 Credit Facility On August 11, 2015, the Company and its subsidiaries entered into a new $55,000 term loan facility and $20,000 revolving credit facility (collectively, the “2015 Credit Facility”) with a syndicate of lenders and repaid all outstanding indebtedness under the prior $50,000 term loan facility and $25,000 revolving credit facility. In April 2016, the Company amended the 2015 Credit Facility to increase the term loan facility by $15,000. The 2015 Credit Facility also includes a letter of credit subfacility under the revolving credit facility. In July 2017, the Company amended the 2015 Credit Facility to increase the term loan facility by $20,000, add an additional $20,000 of borrowing capacity under its revolving credit facility, and reduce its interest rate (the “July 2017 Amendments”). The July 2017 Amendments did not meet the definition of an extinguishment and were accounted for as debt modifications. Interest is charged at either the Base Rate or the Eurodollar rate (as such terms are defined in the agreement governing the 2015 Credit Facility) at the option of the Company, plus an applicable margin. The Base Rate is equal to the higher of i) the Prime Rate, ii) the Federal Funds Effective rate plus 0.5%, or iii) the Eurodollar Rate plus 1.00%. The Eurodollar rate is equal to LIBOR. The applicable margin on Base Rate and Eurodollar Rate loans is 1.00-1.50% and 2.00-2.50% per annum, respectively, depending on the Company’s Leverage Ratio. Interest payments are due quarterly if loans are made under the Base Rate. Interest payments are due on the last day of the applicable interest period under Eurodollar Rate loans. As of September 29, 2017, the term loan facility and revolving credit facility bore interest at the Eurodollar rate option of 3.28%. Principal payments are due on a quarterly basis, however, the $25,000 payment made using proceeds from our IPO in December 2016 was treated as a pre-payment, and therefore the Company is only required to make quarterly princpal payments of $295 on the additional $20,000 borrowed in connection with the July 2017 Amendments. The 2015 Credit Facility matures in August 2020.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 29, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Note 10 – Related Party Transactions The Company received advisory services from Francisco Partners Management, L.P. (“Francisco Partners”) an entity affiliated with the Company’s principal shareholders but in which such shareholders hold no interest, through our December 2016 IPO, at which point the agreement was terminated. Under the agreement, the Company was to pay Francisco Partners an annual advisory fee equal to $1,500 per year. Francisco Partners has waived payment of advisory fees for all periods presented. The Company also received consulting services from Francisco Partners Consulting, LLC (“FPC”), an entity that provides consulting services to the private equity funds management by Francisco Partners and their portfolio companies on a dedicated basis, through our December 2016 IPO, at which point the agreement was terminated. FPC is not an affiliate of the Company or of Francisco Partners, and none of the Company’s principal shareholders hold an in interest in FPC. In the nine months ended September 29, 2017, the Company received from FPC a refund of previously paid consulting fees of $281. In the nine months ended September 23, 2016, the Company paid $512 to FPC for consulting services. The Company purchases certain parts from Ajax Foresight Global Manufacturing Sdn. Bhd. (“AFGM”), an investment acquired in conjunction with the acquisition of Ajax

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 29, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	Note 11 – Share‑Based Compensation The Company has two share‑based compensation plans, the 2012 Equity Incentive Plan (the “2012 Plan”) and the 2016 Omnibus Incentive Plan (the “2016 Plan”), which provide for grants of share‑based awards to employees, directors and consultants. Awards may be in the form of options, tandem and non‑tandem stock appreciation rights, restricted shares, restricted stock units, performance awards, and other share‑based awards. Awards generally vest over four years, 25% on the first anniversary and quarterly thereafter. In May 2017, the Company adopted the 2017 Employee Stock Purchase Plan (the “2017 ESPP”), which provides employees the ability to designate a portion of their base compensation to purchase ordinary shares at a purchase price equal to 85% of the fair market value of ordinary shares on the first or last day of each 6 month purchase period. The current purchase period began on August 7, 2017 and ends on December 30, 2017. No shares have been issued to date under the 2017 ESPP. Share‑based compensation expense for stock options, restricted shares, and ordinary shares across all plans was $623, $373, $1,536, and $1,345 for the third quarter of 2017 and 2016 and the nine months ended September 29, 2017 and September 23, 2016, respectively. Stock Options The following table summarizes the Company’s stock option activity during the nine months ended September 29, 2017: Number of Stock Options Time vesting Performance vesting Weighted average exercise price per share Weighted average remaining contractual term Aggregate intrinsic value (in thousands) Outstanding, December 30, 2016 1,948,307 215,908 $ 8.87 Granted 536,700 — $ 18.84 Exercised (740,472 ) — $ 8.55 Forfeited — — $ — Expired — — $ — Outstanding, September 29, 2017 1,744,535 215,908 $ 11.72 4.1 years $ 29,573 Exercisable, September 29, 2017 988,237 215,908 $ 9.03 2.8 years $ 21,393 Restricted Shares The following table summarizes the Company’s restricted share activity during the nine months ended September 29, 2017: Number of Restricted Ordinary Shares Time vesting Weighted average grant date fair value Unvested, December 30, 2016 103,055 $ 8.39 Granted 95,158 $ 17.83 Vested (58,065 ) $ 8.38 Forfeited — $ — Unvested, September 29, 2017 140,148 $ 14.81

Segment Information

Segment Information	9 Months Ended
	Sep. 29, 2017
Segment Reporting [Abstract]
Segment Information	Note 12 – Segment Information The Company’s Chief Operating Decision Maker, the Chief Executive Officer, reviews the Company’s results of operations on a consolidated level and executive staff is structured by function rather than by product category. Therefore, the Company operates in one operating segment. Key resources, decisions, and assessment of performance are also analyzed on a company‑wide level. The Company’s foreign operations are conducted primarily through its wholly owned subsidiaries in Singapore and Malaysia. The Company’s principal markets include North America, Asia and, to a lesser degree, Europe. Sales by geographic area represent sales to unaffiliated customers. All information on sales by geographic area is based upon the location to which the products were shipped. The following table sets forth sales by geographic area (including sales from discontinued operations): Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 United States of America $ 101,975 $ 57,844 $ 268,614 $ 177,977 Singapore 50,275 41,844 172,799 105,337 Europe 6,740 3,990 19,116 11,898 Other 5,529 2,147 12,427 5,697 Total net sales $ 164,519 $ 105,825 $ 472,956 $ 300,909

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 29, 2017
Earnings Per Share [Abstract]
Earnings per Share	Note 13 – Earnings per Share Earnings per share (“EPS”) was presented in conformity with the two‑class method for the third quarter of 2016 and nine months ended September 23, 2016, required for participating securities, as the Company had two classes of stock outstanding until its December 2016 IPO. EPS was not presented in conformity with the two‑class method for the third quarter of 2017 and nine months ended September 29, 2017, as the Company had only one class of stock outstanding for that period. The following table sets forth the computation of the Company’s basic and diluted net income (loss) per share attributable to ordinary shareholders and a reconciliation of the numerator and denominator used in the calculation: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Numerator: Net income from continuing operations $ 14,298 $ 7,681 $ 37,720 $ 12,788 Undistributed earnings attributed to preferred shareholders — (7,635 ) — (12,726 ) Net income from continuing operations, attributable to ordinary shareholders $ 14,298 $ 46 $ 37,720 $ 62 Net loss from discontinued operations, attributable to ordinary shareholders $ (8 ) $ (7 ) $ (730 ) $ (4,039 ) Net income $ 14,290 $ 7,674 $ 36,990 $ 8,749 Undistributed earnings attributed to preferred shareholders — (7,628 ) — (8,707 ) Net income, attributable to ordinary shareholders $ 14,290 $ 46 $ 36,990 $ 42 Denominator: Weighted average ordinary shares outstanding 25,267,113 106,082 24,923,298 85,781 Dilutive effect of stock options 955,598 394,618 1,039,920 231,932 Dilutive effect of restricted shares 54,088 42,249 44,679 62,788 Dilutive effect of employee share purchase plan 1,348 — 449 — Weighted average number of shares used in diluted per share calculation for net income from continuing operations 26,278,147 542,949 26,008,346 380,501 Weighted average number of shares used in diluted per share calculation for net loss from discontinued operations 25,267,113 106,082 24,923,298 85,781 Weighted average ordinary shares outstanding 25,267,113 106,082 24,923,298 85,781 Dilutive effect of stock options 955,598 394,618 1,039,920 231,932 Dilutive effect of restricted shares 54,088 42,249 44,679 62,788 Dilutive effect of employee share purchase plan 1,348 — 449 — Weighted average number of shares used in diluted per share calculation for net income 26,278,147 542,949 26,008,346 380,501 Net income (loss) per share attributable to ordinary shareholders: Continuing operations: Basic $ 0.57 $ 0.43 $ 1.51 $ 0.72 Diluted $ 0.54 $ 0.08 $ 1.45 $ 0.16 Discontinued operations: Basic $ — $ (0.07 ) $ (0.03 ) $ (47.09 ) Diluted $ — $ (0.07 ) $ (0.03 ) $ (47.09 ) Total: Basic $ 0.57 $ 0.43 $ 1.48 $ 0.49 Diluted $ 0.54 $ 0.08 $ 1.42 $ 0.11 An aggregated total of 178,136, 123,763, 226,607, and 185,181 potential ordinary shares have been excluded from the computation of diluted net income (loss) per share attributable to ordinary shareholders for the the

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 29, 2017
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	Note 14 – Discontinued Operations In January 2016, we made the decision to shut down our Kingston, New York facility as this location consumed a significant amount of resources while contributing very little income. We completed the shutdown of the operations of the New York facility in May 2016 through abandonment as a buyer for the facility and operation was not found. The Company continues to incur expenses related to the lease for this facility, which expires February 2018. In the second quarter of 2017 we accrued for remaining costs to occupy the facility until the lease expires in February 2018. Our initial restructuring accrual recorded in the second quarter of 2016 assumed the ability to sublease the facility, which to‑date we have not been able to do. We do not anticipate any sublease of the facility at this time. The following table represents the carrying amounts of the major classes of assets and liabilities of the Kingston, New York facility: September 29, 2017 December 30, 2016 Assets Current assets: Prepaid expenses and other current assets $ 21 $ 99 Total current assets 21 99 Total assets $ 21 $ 99 Liabilities Current liabilities: Accounts payable $ 133 $ 152 Accrued liabilities 471 360 Other current liabilities 22 52 Total current liabilities 626 564 Deferred tax liabilities 31 30 Other long-term liabilities — 9 Total liabilities $ 657 $ 603 The following table represents results of our discontinued operation: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Net sales $ — $ 138 $ — $ 26,570 Cost of sales — 118 — 28,046 Operating expenses: Research and development — (5 ) — 262 Selling, general, and administrative — 10 721 2,276 Amortization of intangible assets — — — — Total operating expenses — 5 721 2,538 Operating income (loss) — 15 (721 ) (4,014 ) Interest income, net — — — — Other expense, net — (1 ) — (1 ) Income (loss) from discontinued operations before income taxes — 16 (721 ) (4,013 ) Income tax expense 8 23 9 26 Loss from discontinued operations $ (8 ) $ (7 ) $ (730 ) $ (4,039 )

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 29, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 15 – Subsequent Events Subsequent events are events or transactions that occur after the balance sheet date but before financial statements are issued. The Company recognizes in the consolidated financial statements the effects of all subsequent events that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing the financial statements. The Company's consolidated financial statements do not recognize subsequent events that provide evidence about conditions that did not exist at the date of the balance sheet but arose after the balance sheet date and before financial statements are issued. In preparing these consolidated financial statements, the Company has evaluated events and transactions for potential recognition or disclosure through November 13, 2017, the date the consolidated financial statements were issued. On October 23, 2017 the Company entered into a 5 year commercial building lease agreement for the lease of approximately 64,000 square feet in Tualatin, Oregon near its existing facility. Base rent begins at $30 per month, with the first three months waived. The total rent obligation payable over the 5 year lease period is $1,862. On November 3, 2017 Ichor Holdings, LLC, a subsidiary of the Company, entered into a Stock Purchase Agreement (the “Agreement”) for the acquisition of Talon Holdings, LLC, the parent company of Talon Innovations Corporation (“Talon”) for $130,000, subject to customary adjustments. The Company anticipates financing the acquisition with approximately $10,000 of cash on‑hand and $120,000 of incremental borrowings. Talon is located in Sauk Rapids, Minnesota, with facilities in Osakis, Minnesota; Tampa, Florida; and Seoul, South Korea. Talon is a leader in the design and manufacturing of high precision machined parts used in leading edge semiconductor tools. In connection with the acquisition of Talon, the Company expects to borrow $120,000 million under its 2015 Credit Facility as an incremental term loan facility (the “Incremental Loan”), payable in quarterly installments of $1,770. The Incremental Loan’s interest rate and maturity date are consistent with other amounts outstanding under the 2015 Credit Facility. The acquisition is subject to satisfaction of customary closing conditions, including approval under the Hart-Scott-Rodino Antitrust Improvements Act, and is expected to close in the fourth quarter of 2017.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 29, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the U.S. (“GAAP”). All intercompany balances and transactions have been eliminated upon consolidation. All financial figures presented in the notes to consolidated financial statements are in thousands, except share, per share, and percentage figures.
Year End	Year End We use a 52 or 53 week fiscal year ending on the last Friday in December. The three months ended September 29, 2017 and September 23, 2016 were both 13 weeks. The nine months ended September 29, 2017 and September 23, 2016 were both 39 weeks. References to the third quarter of 2017 and 2016 relate to the three months ended September 29, 2017 and September 23, 2016, respectively.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods presented. The Company bases its estimates and judgments on historical experience and on various other assumptions that it believes are reasonable under the circumstances. Actual results could differ from the estimates made by management. Significant estimates include the fair value of assets and liabilities acquired in acquisitions, estimated useful lives for long‑lived assets, allowance for doubtful accounts, inventory valuation, uncertain tax positions, fair value assigned to stock options granted, and impairment analysis for both definite‑lived intangible assets and goodwill.
Correction of an Immaterial Error	Correction of an Immaterial Error During the second quarter of 2017, we corrected an error related to translating the inventory balances at our Malaysia and Singapore subsidiaries at an incorrect foreign currency rate. The error arose in prior period financial statements beginning in periods prior to 2014 and through 2016. The correction resulted in a $1,752 increase in cost of sales and a corresponding decrease in gross profit in our consolidated statements of operations and a decrease to inventories in our consolidated balances sheet during the second quarter of 2017. We evaluated the error on both a quantitative and qualitative basis and determined that the error was not material and did not affect the trend of net income or cash flows in previously issued financial statements. Additionally, we determined that correcting the error in the second quarter of 2017 is not expected to have a material impact to our consolidated financial statements for the fiscal year ended December 29, 2017.
Accounting Pronouncements Recently Issued	Accounting Pronouncements Recently Issued In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014‑09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014‑09”), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014‑09 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance. In August 2015, the FASB issued ASU No. 2015‑14, Revenue from Contracts with Customers (Topic 606) – Deferral of the Effective Date (“ASU 2015‑14”), which defers the effective date of ASU 2014‑09 for one year and permits early adoption in accordance with the original effective date of ASU 2014‑09. The standard is effective for the Company beginning in the first quarter of the fiscal year ending December 28, 2018. During the third quarter of 2017 the Company made progress toward completing the evaluation of potential changes from adopting the new standard on its financial statements and disclosures. The Company is still evaluating the impact of the standard on its revenue streams and significant contracts. At this point in time the Company does not anticipate a material impact from the adoption of this standard. However, the final determination is not known at this time, as it is dependent on the number, size, and complexity of contracts not fully evaluated at this time. In February 2016, the FASB issued ASU No. 2016‑02, Leases (Topic 842) (“ASU 2016‑02”), which establishes a comprehensive lease standard for all industries. The standard requires lessees to recognize a right of use asset and a lease liability for virtually all leases, other than leases that meet the definition of short term leases. The standard is effective for the Company beginning in the first quarter of the fiscal year ending December 27, 2019. The Company is currently evaluating the impact of this accounting standard. In January 2017, the FASB issued ASU No. 2017‑04, Intangibles—Goodwill and Other (Topic 350) (“ASU 2017‑04”), which eliminates the requirement to perform Step 2 of the goodwill impairment test . Under ASU 2017‑04, goodwill impairment testing will be performed by comparing the fair value of the reporting unit with its carrying amount and recognizing an impairment charge, if any, for the amount a reporting unit’s carrying amount exceeds its fair value. The standard is effective for goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. The Company does not expect this standard to have a significant impact on its financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 29, 2017
Business Combinations [Abstract]
Measurement Period Adjustments Related to Finalization of Valuation of Deferred Tax Liabilities and Net Identifiable Assets and Liabilities	The following table presents the preliminary purchase price allocation as of July 27, 2017: The following table presents the preliminary purchase price allocation as of December 30, 2016, measurement period adjustments from December 30, 2016 through April 12, 2017, and the final purchase price allocation as of April 12, 2017, the end of the measurement period. Measurement period adjustments are primarily related to finalization of the valuation of deferred tax liabilities and net identifiable assets and liabilities: Preliminary Allocation December 30, 2016 Measurement Period Adjustment Final Allocation April 12, 2017 Cash acquired $ 187 $ — $ 187 Accounts receivable, net 1,250 — 1,250 Inventories 3,236 — 3,236 Prepaid expenses and other current assets 77 8 85 Property and equipment, net 1,545 (78 ) 1,467 Other noncurrent assets 2,948 — 2,948 Intangible assets, net 8,030 — 8,030 Goodwill 7,078 (22 ) 7,056 Accounts payable and accrued liabilities (4,486 ) 9 (4,477 ) Deferred tax liabilities (2,271 ) 83 (2,188 ) Total acquisition consideration $ 17,594 $ — $ 17,594
Schedule of Pro forma Results of Operations	The pro forma results of operations are presented for informational purposes only and are not indicative of the results of operations that would have been achieved or of results that may occur in the future: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Net sales $ 173,091 $ 125,980 $ 542,145 $ 335,217 Net income from continuing operations $ 15,914 $ 9,596 $ 45,258 $ 14,940 Net income per share from continuing operations attributable to ordinary shareholders: Basic $ 0.61 $ 0.54 $ 1.79 $ 0.86 Diluted $ 0.59 $ 0.10 $ 1.72 $ 0.19

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 29, 2017
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consist of the following: September 29, 2017 December 30, 2016 Raw materials $ 77,527 $ 46,889 Work in process 30,500 22,649 Finished goods 11,181 9,423 Excess and obsolete adjustment (8,576 ) (8,080 ) Total inventories, net $ 110,632 $ 70,881

Property and Equipment (Tables)

Property and Equipment (Tables)	9 Months Ended
	Sep. 29, 2017
Property Plant And Equipment [Abstract]
Summary of Property and Equipment	Property and equipment consist of the following: September 29, 2017 December 30, 2016 Machinery $ 8,172 $ 5,243 Leasehold improvements 14,871 11,276 Computer software, hardware and equipment 4,143 2,848 Office furniture, fixtures and equipment 455 220 Vehicles 37 10 Construction-in-process 1,315 2,069 28,993 21,666 Less accumulated depreciation (12,245 ) (9,648 ) Total property and equipment, net $ 16,748 $ 12,018

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)	9 Months Ended
	Sep. 29, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Definite-Lived Intangible Assets	Definite‑lived intangible assets consist of the following: September 29, 2017 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Trademarks $ 9,690 $ (5,572 ) $ — $ 4,118 Customer relationships 62,037 (20,186 ) (11,076 ) 30,775 Developed technology 28,100 (16,810 ) (8,155 ) 3,135 Backlog 660 (220 ) — 440 Total intangible assets $ 100,487 $ (42,788 ) $ (19,231 ) $ 38,468 December 30, 2016 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Trademarks $ 9,690 $ (4,845 ) $ — $ 4,845 Customer relationships 50,557 (17,150 ) (11,076 ) 22,331 Developed technology 28,100 (14,975 ) (8,155 ) 4,970 Backlog 30 (30 ) — — Total intangible assets $ 88,377 $ (37,000 ) $ (19,231 ) $ 32,146
Schedule of Changes in Goodwill	The following table presents changes to goodwill during the nine months ended September 29, 2017: Goodwill Balance at December 30, 2016 $ 77,093 Acquisitions 17,935 Impairment — Balance at September 29, 2017 $ 95,028

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 29, 2017
Income Tax Disclosure [Abstract]
Schedule of income from continuing operations before tax	Information on the Company’s income taxes for the periods reported is as follows: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Income tax benefit from continuing operations $ (6,556 ) $ (1,888 ) $ (5,558 ) $ (1,427 ) Income from continuing operations before income taxes $ 7,742 $ 5,793 $ 32,162 $ 11,361 Effective income tax rate -84.7 % -32.6 % -17.3 % -12.6 %

Credit Facilities (Tables)

Credit Facilities (Tables)	9 Months Ended
	Sep. 29, 2017
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long‑term debt consists of the following: September 29, 2017 December 30, 2016 Term loan facility $ 59,535 $ 39,830 Revolving credit facility 10,000 — Total principal amount of long-term debt 69,535 39,830 Less unamortized debt issuance costs (1,793 ) (1,886 ) Total long-term debt, net 67,742 37,944 Less current portion (1,180 ) — Total long-term debt, less current portion, net $ 66,562 $ 37,944

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 29, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Stock Option Activity	The following table summarizes the Company’s stock option activity during the nine months ended September 29, 2017: Number of Stock Options Time vesting Performance vesting Weighted average exercise price per share Weighted average remaining contractual term Aggregate intrinsic value (in thousands) Outstanding, December 30, 2016 1,948,307 215,908 $ 8.87 Granted 536,700 — $ 18.84 Exercised (740,472 ) — $ 8.55 Forfeited — — $ — Expired — — $ — Outstanding, September 29, 2017 1,744,535 215,908 $ 11.72 4.1 years $ 29,573 Exercisable, September 29, 2017 988,237 215,908 $ 9.03 2.8 years $ 21,393
Schedule of Restricted Share Activity	The following table summarizes the Company’s restricted share activity during the nine months ended September 29, 2017: Number of Restricted Ordinary Shares Time vesting Weighted average grant date fair value Unvested, December 30, 2016 103,055 $ 8.39 Granted 95,158 $ 17.83 Vested (58,065 ) $ 8.38 Forfeited — $ — Unvested, September 29, 2017 140,148 $ 14.81

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 29, 2017
Segment Reporting [Abstract]
Schedule of Sales By Geographic Area (Including Sales from Discontinued Operations)	The following table sets forth sales by geographic area (including sales from discontinued operations): Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 United States of America $ 101,975 $ 57,844 $ 268,614 $ 177,977 Singapore 50,275 41,844 172,799 105,337 Europe 6,740 3,990 19,116 11,898 Other 5,529 2,147 12,427 5,697 Total net sales $ 164,519 $ 105,825 $ 472,956 $ 300,909

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 29, 2017
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Income (Loss) Per Share Attributable to Ordinary Shareholders	The following table sets forth the computation of the Company’s basic and diluted net income (loss) per share attributable to ordinary shareholders and a reconciliation of the numerator and denominator used in the calculation: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Numerator: Net income from continuing operations $ 14,298 $ 7,681 $ 37,720 $ 12,788 Undistributed earnings attributed to preferred shareholders — (7,635 ) — (12,726 ) Net income from continuing operations, attributable to ordinary shareholders $ 14,298 $ 46 $ 37,720 $ 62 Net loss from discontinued operations, attributable to ordinary shareholders $ (8 ) $ (7 ) $ (730 ) $ (4,039 ) Net income $ 14,290 $ 7,674 $ 36,990 $ 8,749 Undistributed earnings attributed to preferred shareholders — (7,628 ) — (8,707 ) Net income, attributable to ordinary shareholders $ 14,290 $ 46 $ 36,990 $ 42 Denominator: Weighted average ordinary shares outstanding 25,267,113 106,082 24,923,298 85,781 Dilutive effect of stock options 955,598 394,618 1,039,920 231,932 Dilutive effect of restricted shares 54,088 42,249 44,679 62,788 Dilutive effect of employee share purchase plan 1,348 — 449 — Weighted average number of shares used in diluted per share calculation for net income from continuing operations 26,278,147 542,949 26,008,346 380,501 Weighted average number of shares used in diluted per share calculation for net loss from discontinued operations 25,267,113 106,082 24,923,298 85,781 Weighted average ordinary shares outstanding 25,267,113 106,082 24,923,298 85,781 Dilutive effect of stock options 955,598 394,618 1,039,920 231,932 Dilutive effect of restricted shares 54,088 42,249 44,679 62,788 Dilutive effect of employee share purchase plan 1,348 — 449 — Weighted average number of shares used in diluted per share calculation for net income 26,278,147 542,949 26,008,346 380,501 Net income (loss) per share attributable to ordinary shareholders: Continuing operations: Basic $ 0.57 $ 0.43 $ 1.51 $ 0.72 Diluted $ 0.54 $ 0.08 $ 1.45 $ 0.16 Discontinued operations: Basic $ — $ (0.07 ) $ (0.03 ) $ (47.09 ) Diluted $ — $ (0.07 ) $ (0.03 ) $ (47.09 ) Total: Basic $ 0.57 $ 0.43 $ 1.48 $ 0.49 Diluted $ 0.54 $ 0.08 $ 1.42 $ 0.11

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 29, 2017
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Carrying Amounts of Major Classes of Assets and Liabilities and Results of Discontinued Operation (Tables)	The following table represents the carrying amounts of the major classes of assets and liabilities of the Kingston, New York facility: September 29, 2017 December 30, 2016 Assets Current assets: Prepaid expenses and other current assets $ 21 $ 99 Total current assets 21 99 Total assets $ 21 $ 99 Liabilities Current liabilities: Accounts payable $ 133 $ 152 Accrued liabilities 471 360 Other current liabilities 22 52 Total current liabilities 626 564 Deferred tax liabilities 31 30 Other long-term liabilities — 9 Total liabilities $ 657 $ 603 The following table represents results of our discontinued operation: Three Months Ended Nine Months Ended September 29, 2017 September 23, 2016 September 29, 2017 September 23, 2016 Net sales $ — $ 138 $ — $ 26,570 Cost of sales — 118 — 28,046 Operating expenses: Research and development — (5 ) — 262 Selling, general, and administrative — 10 721 2,276 Amortization of intangible assets — — — — Total operating expenses — 5 721 2,538 Operating income (loss) — 15 (721 ) (4,014 ) Interest income, net — — — — Other expense, net — (1 ) — (1 ) Income (loss) from discontinued operations before income taxes — 16 (721 ) (4,013 ) Income tax expense 8 23 9 26 Loss from discontinued operations $ (8 ) $ (7 ) $ (730 ) $ (4,039 )

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 29, 2017	Jun. 30, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016	Dec. 30, 2016
Basis Of Presentation [Line Items]
Increase in cost of sales	$ 140,323		$ 88,802	$ 401,239	$ 230,349
Decrease in gross profit	24,196		$ 16,885	71,717	$ 43,990
Decrease to inventories	$ 110,632			$ 110,632		$ 70,881
Restatement Adjustment
Basis Of Presentation [Line Items]
Immaterial Error Correction		During the second quarter of 2017, we corrected an error related to translating the inventory balances at our Malaysia and Singapore subsidiaries at an incorrect foreign currency rate. The error arose in prior period financial statements beginning in periods prior to 2014 and through 2016. The correction resulted in a $1,752 increase in cost of sales and a corresponding decrease in gross profit in our consolidated statements of operations and a decrease to inventories in our consolidated balances sheet during the second quarter of 2017. We evaluated the error on both a quantitative and qualitative basis and determined that the error was not material and did not affect the trend of net income or cash flows in previously issued financial statements. Additionally, we determined that correcting the error in the second quarter of 2017 is not expected to have a material impact to our consolidated financial statements for the fiscal year ended December 29, 2017.
Increase in cost of sales		$ 1,752
Decrease in gross profit		(1,752)
Decrease to inventories		$ (1,752)

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Jul. 27, 2017	Apr. 12, 2016	Sep. 29, 2017	Sep. 29, 2017	Apr. 12, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Business Acquisition [Line Items]
Cost of sales				$ 140,323		$ 88,802	$ 401,239	$ 230,349
Cal Weld, Inc.
Business Acquisition [Line Items]
Acquisition amount	$ 56,879
Escrow deposits for indemnification and working capital claims			$ 6,000
Working capital claims submitted and settled			959	959			959
Business acquisition, Transaction costs				1,498			1,712
Net sales attributable to acquiree included in statement of operations				23,389
Net income attributable to acquiree included in statement of operations				1,391
Cal Weld, Inc. | Inventory Fair Value Adjustment
Business Acquisition [Line Items]
Cost of sales								$ 3,594
Cal Weld, Inc. | Customer Relationships
Business Acquisition [Line Items]
Allocated intangible assets			11,480	11,480			$ 11,480
Weighted average amortization period							10 years
Cal Weld, Inc. | Backlog
Business Acquisition [Line Items]
Allocated intangible assets			$ 660	$ 660			$ 660
Weighted average amortization period							6 months
Ajax-United Patterns & Molds, Inc
Business Acquisition [Line Items]
Acquisition amount		$ 17,594			$ 17,594
Allocated intangible assets					$ 8,030

Acquisitions - Schedule of Meas

Acquisitions - Schedule of Measurement Period Adjustments Related to Finalization of Valuation of Deferred Tax Liabilities and Net Identifiable Assets and Liabilities (Details) - USD ($) $ in Thousands	Jul. 27, 2017	Apr. 12, 2016	Apr. 12, 2017	Dec. 30, 2016	Sep. 29, 2017
Business Acquisition [Line Items]
Goodwill				$ 77,093	$ 95,028
Cal Weld, Inc.
Business Acquisition [Line Items]
Total acquisition consideration	$ 56,879
Cal Weld, Inc. | Preliminary Allocation
Business Acquisition [Line Items]
Cash acquired	7,337
Accounts receivable, net	10,318
Inventories	20,836
Prepaid expenses and other current assets	287
Property and equipment, net	1,639
Other noncurrent assets	587
Intangible assets, net	12,140
Goodwill	17,957
Accounts payable and accrued liabilities	(8,007)
Other non-current liabilities	(908)
Deferred tax liabilities	(5,307)
Total acquisition consideration	$ 56,879
Ajax-United Patterns & Molds, Inc
Business Acquisition [Line Items]
Cash acquired			$ 187
Accounts receivable, net			1,250
Inventories			3,236
Prepaid expenses and other current assets			85
Property and equipment, net			1,467
Other noncurrent assets			2,948
Intangible assets, net			8,030
Goodwill			7,056
Accounts payable and accrued liabilities			(4,477)
Deferred tax liabilities			(2,188)
Total acquisition consideration		$ 17,594	17,594
Ajax-United Patterns & Molds, Inc | Preliminary Allocation
Business Acquisition [Line Items]
Cash acquired				187
Accounts receivable, net				1,250
Inventories				3,236
Prepaid expenses and other current assets				77
Property and equipment, net				1,545
Other noncurrent assets				2,948
Intangible assets, net				8,030
Goodwill				7,078
Accounts payable and accrued liabilities				(4,486)
Deferred tax liabilities				(2,271)
Total acquisition consideration				$ 17,594
Ajax-United Patterns & Molds, Inc | Measurement Period Adjustment
Business Acquisition [Line Items]
Prepaid expenses and other current assets			8
Property and equipment, net			(78)
Goodwill			(22)
Accounts payable and accrued liabilities			9
Deferred tax liabilities			$ 83

Acquisitions - Schedule of Pro

Acquisitions - Schedule of Pro forma Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Business Combinations [Abstract]
Net sales	$ 173,091	$ 125,980	$ 542,145	$ 335,217
Net income from continuing operations	$ 15,914	$ 9,596	$ 45,258	$ 14,940
Net income per share from continuing operations attributable to ordinary shareholders:
Basic	$ 0.61	$ 0.54	$ 1.79	$ 0.86
Diluted	$ 0.59	$ 0.10	$ 1.72	$ 0.19

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Sep. 29, 2017	Dec. 30, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 77,527	$ 46,889
Work in process	30,500	22,649
Finished goods	11,181	9,423
Excess and obsolete adjustment	(8,576)	(8,080)
Inventories, net	$ 110,632	$ 70,881

Property and Equipment - Summar

Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 29, 2017	Dec. 30, 2016
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 28,993	$ 21,666
Less accumulated depreciation	(12,245)	(9,648)
Total property and equipment, net	16,748	12,018
Machinery
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	8,172	5,243
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	14,871	11,276
Office Furniture, Fixtures and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	455	220
Vehicles
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	37	10
Construction-In-Progress
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	1,315	2,069
Computer Software, Hardware and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 4,143	$ 2,848

Property and Equipment - Additi

Property and Equipment - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Property Plant And Equipment [Abstract]
Depreciation expense	$ 946	$ 624	$ 2,533	$ 1,839

Intangible Assets and Goodwil40

Intangible Assets and Goodwill - Schedule of Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 29, 2017	Dec. 30, 2016
Finite Lived Intangible Assets [Line Items]
Gross value	$ 100,487	$ 88,377
Accumulated amortization	(42,788)	(37,000)
Accumulated impairment charges	(19,231)	(19,231)
Carrying amount	38,468	32,146
Trademarks
Finite Lived Intangible Assets [Line Items]
Gross value	9,690	9,690
Accumulated amortization	(5,572)	(4,845)
Carrying amount	4,118	4,845
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross value	62,037	50,557
Accumulated amortization	(20,186)	(17,150)
Accumulated impairment charges	(11,076)	(11,076)
Carrying amount	30,775	22,331
Developed Technology
Finite Lived Intangible Assets [Line Items]
Gross value	28,100	28,100
Accumulated amortization	(16,810)	(14,975)
Accumulated impairment charges	(8,155)	(8,155)
Carrying amount	3,135	4,970
Backlog
Finite Lived Intangible Assets [Line Items]
Gross value	660	30
Accumulated amortization	(220)	$ (30)
Carrying amount	$ 440

Intangible Assets and Goodwil41

Intangible Assets and Goodwill - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 2,220	$ 1,804	$ 5,818	$ 5,210

Intangible Assets and Goodwil42

Intangible Assets and Goodwill - Schedule of Changes in Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 29, 2017USD ($)
Goodwill [Roll Forward]
Balance at December 30, 2016	$ 77,093
Acquisitions	17,935
Balance at September 29, 2017	$ 95,028

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Thousands	Sep. 29, 2017USD ($)
Commitments And Contingencies Disclosure [Abstract]
Total operating lease obligation	$ 10,726
Operating lease expiration Date	2,024
Purchase commitments of raw materials and component parts	$ 78,903

Income Taxes - Summary of Infor

Income Taxes - Summary of Information on Company's Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax benefit from continuing operations	$ (6,556)	$ (1,888)	$ (5,558)	$ (1,427)
Income from continuing operations before income taxes	$ 7,742	$ 5,793	$ 32,162	$ 11,361
Effective income tax rate	(84.70%)	(32.60%)	(17.30%)	(12.60%)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) $ in Thousands	3 Months Ended
	Sep. 29, 2017USD ($)
Income Taxes [Line Items]
Tax benefit as result of restructuring of intercompany debt	$ 1,627
Unrecognized tax benefits for uncertain tax positions	1,644
Unrecognized tax benefits for uncertain tax positions related interest	76
Unrecognized tax benefits for uncertain tax positions related penalties	346
Cal Weld, Inc.
Income Taxes [Line Items]
One-time income tax benefit in connection with acquisition	$ 5,281

Employee Benefit Programs - Add

Employee Benefit Programs - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Defined Contribution Plan Disclosure [Line Items]
Percentage of maximum annual contributions per employee	50.00%	50.00%	50.00%	50.00%
Percentage of eligible employee receive discretionary matching contribution	50.00%	50.00%	50.00%	50.00%
Employee matching contributions	$ 97,000	$ 56,000	$ 435,000	$ 274,000
Expense incurred related to self-insured plan	$ 612,000	$ 615,000	2,028,000	$ 1,824,000
Maximum
Defined Contribution Plan Disclosure [Line Items]
Maximum annual discretionary contribution amount			$ 2,500

Credit Facilities - Schedule of

Credit Facilities - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 29, 2017	Dec. 30, 2016
Line Of Credit Facility [Line Items]
Total principal amount of long-term debt	$ 69,535	$ 39,830
Less unamortized debt issuance costs	(1,793)	(1,886)
Total long-term debt, net	67,742	37,944
Less current portion	(1,180)
Long-term debt, less current portion, net	66,562	37,944
Term Loan Facility
Line Of Credit Facility [Line Items]
Total principal amount of long-term debt	59,535	$ 39,830
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Total principal amount of long-term debt	$ 10,000

Credit Facilities - Additional

Credit Facilities - Additional Information (Details) - USD ($)	Aug. 11, 2015	Jul. 31, 2017	Apr. 30, 2016	Sep. 29, 2017	Sep. 23, 2016	Dec. 30, 2016
Line Of Credit Facility [Line Items]
Repayment of princpal amount					$ 7,000,000
Prior Term Loan Facility
Line Of Credit Facility [Line Items]
Credit facility, face amount	$ 50,000,000
Prior Revolving Credit Facility
Line Of Credit Facility [Line Items]
Credit facility, face amount	$ 25,000,000
2015 Credit Facility
Line Of Credit Facility [Line Items]
Description of interest rate				The Base Rate is equal to the higher of i) the Prime Rate, ii) the Federal Funds Effective rate plus 0.5%, or iii) the Eurodollar Rate plus 1.00%. The Eurodollar rate is equal to LIBOR. The applicable margin on Base Rate and Eurodollar Rate loans is 1.00-1.50% and 2.00-2.50% per annum, respectively, depending on the Company’s Leverage Ratio.
Repayment of princpal amount						$ 25,000,000
Principal payments maturity date				Aug. 31, 2020
2015 Credit Facility | Federal Funds Effective Rate
Line Of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
2015 Credit Facility | Eurodollar Rate
Line Of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Frequency of interest payment				Last day of the applicable interest period
2015 Credit Facility | Eurodollar Rate | Minimum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	2.00%
2015 Credit Facility | Eurodollar Rate | Maximum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	2.50%
2015 Credit Facility | Base Rate
Line Of Credit Facility [Line Items]
Frequency of interest payment				Quarterly
2015 Credit Facility | Base Rate | Minimum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	1.00%
2015 Credit Facility | Base Rate | Maximum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	1.50%
2015 Credit Facility | Term Loan Facility
Line Of Credit Facility [Line Items]
Credit facility, face amount	$ 55,000,000
Credit facility, increase amount		$ 20,000,000	$ 15,000,000
2015 Credit Facility | Term Loan Facility | Eurodollar Rate
Line Of Credit Facility [Line Items]
Interest rate				3.28%
2015 Credit Facility | Revolving Credit Facility
Line Of Credit Facility [Line Items]
Credit facility, face amount	$ 20,000,000
Credit facility, additional borrowing capacity		20,000,000
Credit facility, periodic principal payments		$ 295,000
Credit facility, frequency of principal payments				Quarterly
2015 Credit Facility | Revolving Credit Facility | Eurodollar Rate
Line Of Credit Facility [Line Items]
Interest rate				3.28%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Dec. 30, 2016
Francisco Partners Management, L.P.
Related Party Transaction [Line Items]
Annual advisory fees per year	$ 1,500
Francisco Partners Consulting, LLC
Related Party Transaction [Line Items]
Refund of previously paid consulting fees	(281)
Payment made for consulting services		$ 512
Ajax Foresight Global Manufacturing Sdn. Bhd. (AFGM)
Related Party Transaction [Line Items]
Total purchases	$ 387	$ 360
Outstanding accounts payable			$ 344

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended				9 Months Ended
	May 31, 2017	Sep. 29, 2017shares	Sep. 29, 2017USD ($)	Mar. 31, 2017	Sep. 23, 2016USD ($)	Mar. 25, 2016	Sep. 29, 2017USD ($)CompensationPlan	Sep. 23, 2016USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of share-based compensation plans | CompensationPlan							2
Award vesting description							Awards generally vest over four years, 25% on the first anniversary and quarterly thereafter.
Awards vesting period							4 years
Share-based compensation expense for stock options, restricted shares, and ordinary shares across all plans | $			$ 623		$ 373		$ 1,536	$ 1,345
2017 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price equal to percentage of fair market value of ordinary shares	85.00%
Purchase period of ordinary shares, beginning date	Aug. 7, 2017
Purchase period of ordinary shares, ending date	Dec. 30, 2017
Number of shares issued | shares		0
First Anniversary
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards vesting percentage				25.00%		25.00%
Year Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards vesting percentage				25.00%		25.00%
Year Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards vesting percentage				25.00%		25.00%
Year Four
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Awards vesting percentage				25.00%		25.00%

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Stock Option Activity (Details) - Stock Options $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 29, 2017USD ($)$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average exercise price per share, Outstanding, Beginning Balance | $ / shares	$ 8.87
Weighted average exercise price per share, Granted | $ / shares	18.84
Weighted average exercise price per share, Exercised | $ / shares	8.55
Weighted average exercise price per share, Expired | $ / shares	0
Weighted average exercise price per share, Outstanding, Ending Balance | $ / shares	11.72
Weighted average exercise price per share, Exercisable | $ / shares	$ 9.03
Weighted average remaining contractual term, Outstanding	4 years 1 month 7 days
Weighted average remaining contractual term, Exercisable	2 years 9 months 19 days
Aggregate intrinsic value, Outstanding | $	$ 29,573
Aggregate intrinsic value, Exercisable | $	$ 21,393
Time Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Stock Options, Outstanding, Beginning Balance	1,948,307
Number of Stock Options, Granted	536,700
Number of Stock Options, Exercised	(740,472)
Number of Stock Options, Expired	0
Number of Stock Options, Outstanding, Ending Balance	1,744,535
Number of Stock Options, Exercisable	988,237
Performance Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Stock Options, Outstanding, Beginning Balance	215,908
Number of Stock Options, Exercised	0
Number of Stock Options, Expired	0
Number of Stock Options, Outstanding, Ending Balance	215,908
Number of Stock Options, Exercisable	215,908

Share-Based Compensation - Sc52

Share-Based Compensation - Schedule of Restricted Share Activity (Details)	9 Months Ended
	Sep. 29, 2017$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value, Unvested, Beginning Balance | $ / shares	$ 8.39
Weighted average grant date fair value, Granted | $ / shares	17.83
Weighted average grant date fair value, Vested | $ / shares	8.38
Weighted average grant date fair value, Forfeited | $ / shares	0
Weighted average grant date fair value, Unvested, Ending Balance | $ / shares	$ 14.81
Time Vesting Restricted Ordinary Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Restricted Ordinary Shares, Unvested, Beginning Balance | shares	103,055
Number of Restricted Ordinary Shares, Granted | shares	95,158
Number of Restricted Ordinary Shares, Vested | shares	(58,065)
Number of Restricted Ordinary Shares, Forfeited | shares	0
Number of Restricted Ordinary Shares, Unvested, Ending Balance | shares	140,148

Segment Information - Additiona

Segment Information - Additional Information (Details)	9 Months Ended
	Sep. 29, 2017Segment
Segment Reporting [Abstract]
Number of operating segment	1

Segment Information - Schedule

Segment Information - Schedule of Sales By Geographic Area (Including Sales from Discontinued Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Segment Reporting Information [Line Items]
Total net sales	$ 164,519	$ 105,825	$ 472,956	$ 300,909
United States of America
Segment Reporting Information [Line Items]
Total net sales	101,975	57,844	268,614	177,977
Singapore
Segment Reporting Information [Line Items]
Total net sales	50,275	41,844	172,799	105,337
Europe
Segment Reporting Information [Line Items]
Total net sales	6,740	3,990	19,116	11,898
Other
Segment Reporting Information [Line Items]
Total net sales	$ 5,529	$ 2,147	$ 12,427	$ 5,697

Earnings per Share - Computatio

Earnings per Share - Computation of Basic and Diluted Net Income (Loss) Per Share Attributable to Ordinary Shareholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Earnings Per Share Basic And Diluted [Line Items]
Net income from continuing operations	$ 14,298	$ 7,681	$ 37,720	$ 12,788
Undistributed earnings attributed to preferred shareholders		(7,635)		(12,726)
Net income from continuing operations, attributable to ordinary shareholders	14,298	46	37,720	62
Net loss from discontinued operations, attributable to ordinary shareholders	(8)	(7)	(730)	(4,039)
Net income	14,290	7,674	36,990	8,749
Undistributed earnings attributed to preferred shareholders		(7,628)		(8,707)
Net income attributable to ordinary shareholders	$ 14,290	$ 46	$ 36,990	$ 42
Weighted average ordinary shares outstanding	25,267,113	106,082	24,923,298	85,781
Weighted average number of shares used in diluted per share calculation for net income from continuing operations	26,278,147	542,949	26,008,346	380,501
Continuing operations:
Basic	$ 0.57	$ 0.43	$ 1.51	$ 0.72
Diluted	0.54	0.08	1.45	0.16
Discontinued operations:
Basic		(0.07)	(0.03)	(47.09)
Diluted		(0.07)	(0.03)	(47.09)
Total:
Net income per share attributable to ordinary shareholders, Basic	0.57	0.43	1.48	0.49
Net income per share attributable to ordinary shareholders, Diluted	$ 0.54	$ 0.08	$ 1.42	$ 0.11
Employee Stock Option
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	955,598	394,618	1,039,920	231,932
Restricted Stock
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	54,088	42,249	44,679	62,788
2017 Employee Stock Purchase Plan
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	1,348		449
Continuing Operations
Earnings Per Share Basic And Diluted [Line Items]
Weighted average ordinary shares outstanding	25,267,113	106,082	24,923,298	85,781
Weighted average number of shares used in diluted per share calculation for net income from continuing operations	26,278,147	542,949	26,008,346	380,501
Continuing Operations | Employee Stock Option
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	955,598	394,618	1,039,920	231,932
Continuing Operations | Restricted Stock
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	54,088	42,249	44,679	62,788
Continuing Operations | 2017 Employee Stock Purchase Plan
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	1,348		449
Discontinued Operations
Earnings Per Share Basic And Diluted [Line Items]
Weighted average number of shares used in diluted per share calculation for net income from continuing operations	25,267,113	106,082	24,923,298	85,781

Earnings per Share - Additional

Earnings per Share - Additional Information (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Earnings Per Share [Abstract]
Potential ordinary shares excluded from computation of diluted net income (loss) per share attributable to ordinary shareholders	178,136	123,763	226,607	185,181

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details)	9 Months Ended
	Sep. 29, 2017
Kingston, New York Facility
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Lease expiration period	2018-02

Discontinued Operations - Sched

Discontinued Operations - Schedule of Carrying Amounts of Major Classes of Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 29, 2017	Dec. 30, 2016
Current assets:
Total current assets	$ 21	$ 99
Current liabilities:
Total current liabilities	626	564
Kingston, New York Facility
Current assets:
Prepaid expenses and other current assets	21	99
Total current assets	21	99
Total assets	21	99
Current liabilities:
Accounts payable	133	152
Accrued liabilities	471	360
Other current liabilities	22	52
Total current liabilities	626	564
Deferred tax liabilities	31	30
Other long-term liabilities		9
Total liabilities	$ 657	$ 603

Discontinued Operations - Sch59

Discontinued Operations - Schedule of Results of Discontinued Operation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 23, 2016	Sep. 29, 2017	Sep. 23, 2016
Operating expenses:
Income (loss) from discontinued operations before income taxes		$ 16	$ (721)	$ (4,013)
Income tax expense	$ 8	23	9	26
Net loss from discontinued operations	(8)	(7)	(730)	(4,039)
Kingston, New York Facility
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net sales		138	0	26,570
Cost of sales		118	0	28,046
Operating expenses:
Research and development		(5)	0	262
Selling, general, and administrative		10	721	2,276
Total operating expenses		5	721	2,538
Operating income (loss)		15	(721)	(4,014)
Other expense, net		(1)		(1)
Income (loss) from discontinued operations before income taxes		16	(721)	(4,013)
Income tax expense	8	23	9	26
Net loss from discontinued operations	$ (8)	$ (7)	$ (730)	$ (4,039)

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) $ in Thousands	Nov. 13, 2017USD ($)ft²	Nov. 03, 2017USD ($)	Sep. 29, 2017USD ($)
Subsequent Event [Line Items]
Total operating lease obligation			$ 10,726
Subsequent Event | Talon Holdings L L C
Subsequent Event [Line Items]
Total acquisition consideration		$ 130,000
Business acquisition, cash paid		10,000
Business acquisition, incremental borrowing		120,000
Subsequent Event | Talon Holdings L L C | Line of Credit
Subsequent Event [Line Items]
Amount borrowed under incremental term loan		120,000
Incremental term loan, quarterly installments		$ 1,770
Commercial Building | Subsequent Event
Subsequent Event [Line Items]
Lease agreement period	5 years
Lease agreement base rent per month	$ 30
Lease agreement rent waiver period	3 months
Total operating lease obligation	$ 1,862
Commercial Building | Subsequent Event | Oregon
Subsequent Event [Line Items]
Lease agreement square feet | ft²	64,000