Ichor (ICHR) 10-Q 8 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 29, 2018	Aug. 03, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 29, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Trading Symbol	ICHR
Entity Registrant Name	ICHOR HOLDINGS, LTD.
Entity Central Index Key	1,652,535
Current Fiscal Year End Date	--12-28
Entity Filer Category	Non-accelerated Filer
Entity Ordinary Shares Outstanding		24,358,730

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 29, 2017
Current assets:
Cash	$ 63,419	$ 68,794
Restricted cash		510
Accounts receivable, net	65,672	49,249
Inventories, net	148,066	154,541
Prepaid expenses and other current assets	5,514	5,357
Current assets from discontinued operations		3
Total current assets	282,671	278,454
Property and equipment, net	39,605	34,380
Other noncurrent assets	888	1,052
Deferred tax assets	994	994
Intangible assets, net	67,313	73,405
Goodwill	171,344	169,399
Total assets	562,815	557,684
Current liabilities:
Accounts payable	107,493	121,405
Accrued liabilities	12,764	12,211
Other current liabilities	5,290	6,715
Current portion of long-term debt	8,750	6,490
Current liabilities from discontinued operations		400
Total current liabilities	134,297	147,221
Long-term debt, less current portion, net	176,825	180,247
Deferred tax liabilities	6,368	10,558
Other non-current liabilities	3,106	2,896
Total liabilities	320,596	340,922
Shareholders’ equity:
Preferred shares ($0.0001 par value; 20,000,000 shares authorized; zero shares issued and outstanding)
Ordinary shares ($0.0001 par value; 200,000,000 shares authorized; 25,268,836 and 25,892,162 shares outstanding, respectively; 26,526,441 and 25,892,162 shares issued, respectively)	3	3
Additional paid in capital	225,363	214,697
Treasury shares at cost (1,257,605 and zero shares, respectively)	(29,970)
Retained earnings	46,823	2,062
Total shareholders’ equity	242,219	216,762
Total liabilities and shareholders’ equity	$ 562,815	$ 557,684

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 29, 2018	Dec. 29, 2017
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	26,526,441	25,892,162
Ordinary shares, outstanding	25,268,836	25,892,162
Treasury shares	1,257,605	0

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Net sales	$ 248,973	$ 159,733	$ 507,002	$ 308,437
Cost of sales	205,098	136,227	420,528	260,916
Gross profit	43,875	23,506	86,474	47,521
Operating expenses:
Research and development	2,577	1,950	5,029	3,694
Selling, general, and administrative	11,647	7,984	27,358	14,842
Amortization of intangible assets	3,772	1,803	7,651	3,598
Total operating expenses	17,996	11,737	40,038	22,134
Operating income	25,879	11,769	46,436	25,387
Interest expense	2,303	675	4,807	1,365
Other expense (income), net	(217)	151	24	(398)
Income from continuing operations before income taxes	23,793	10,943	41,605	24,420
Income tax expense (benefit) from continuing operations	(4,247)	473	(3,156)	998
Net income from continuing operations	28,040	10,470	44,761	23,422
Discontinued operations:
Loss from discontinued operations before taxes		(610)		(721)
Income tax expense from discontinued operations				1
Net loss from discontinued operations		(610)		(722)
Net income	$ 28,040	$ 9,860	$ 44,761	$ 22,700
Net income per share from continuing operations Basic	$ 1.09	$ 0.42	$ 1.73	$ 0.95
Net income per share from continuing operations Diluted	1.07	0.40	1.69	0.91
Net income per share Basic	1.09	0.40	1.73	0.92
Net income per share Diluted	$ 1.07	$ 0.38	$ 1.69	$ 0.88
Shares used to compute net income from continuing operations per share:
Shares used to compute net income from continuing operations per share Basic	25,674,173	24,848,365	25,852,235	24,751,390
Shares used to compute net income from continuing operations per share Diluted	26,120,717	26,063,527	26,428,207	25,868,403
Continuing Operations
Shares used to compute net income from continuing operations per share:
Shares used to compute net income from continuing operations per share Basic	25,674,173	24,848,365	25,852,235	24,751,390
Shares used to compute net income from continuing operations per share Diluted	26,120,717	26,063,527	26,428,207	25,868,403

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - 6 months ended Jun. 29, 2018 - USD ($) $ in Thousands	Total	Ordinary Shares	Additional Paid-in Capital	Treasury Shares	Retained Earnings
Balance at Dec. 29, 2017	$ 216,762	$ 3	$ 214,697		$ 2,062
Balance, Shares at Dec. 29, 2017		25,892,162
Ordinary shares issued from exercise of stock options	5,510		5,510
Ordinary shares issued from exercise of stock options, shares		562,232
Ordinary shares issued from vesting of restricted share units	(27)		(27)
Ordinary shares issued from vesting of restricted share units, Shares		61,266
Ordinary shares issued from employee share purchase plan	177		177
Ordinary shares issued from employee share purchase plan, shares		10,781
Repurchase of ordinary shares	$ (29,970)			$ (29,970)
Repurchase of ordinary shares, shares	(1,257,605)	(1,257,605)		1,257,605
Share-based compensation expense	$ 5,006		5,006
Net income	44,761				44,761
Balance at Jun. 29, 2018	$ 242,219	$ 3	$ 225,363	$ (29,970)	$ 46,823
Balance, Shares at Jun. 29, 2018		25,268,836		1,257,605

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 44,761	$ 22,700
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,567	5,185
Gain on sale of investments and settlement of note receivable		(241)
Share-based compensation	5,006	913
Deferred income taxes	(4,950)	(224)
Amortization of debt issuance costs	491	264
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable, net	(14,960)	(13,417)
Inventories	8,166	(26,114)
Prepaid expenses and other assets	167	2,462
Accounts payable	(18,189)	13,592
Accrued liabilities	(317)	197
Other liabilities	(1,585)	2,191
Net cash provided by operating activities	30,157	7,508
Cash flows from investing activities:
Capital expenditures	(8,797)	(5,214)
Cash paid for acquisitions, net of cash acquired	(1,443)
Proceeds from sale of investments and settlement note receivable		2,430
Net cash used in investing activities	(10,240)	(2,784)
Cash flows from financing activities:
Issuance of ordinary shares, net of fees		7,278
Issuance of ordinary shares under share-based compensation plans	5,847	2,188
Employees' taxes paid upon vesting of restricted share units	(27)
Repurchase of ordinary shares	(29,970)
Debt issuance and modification costs	(2,092)
Borrowings on revolving credit facility	7,162
Repayments on term loan	(6,722)
Net cash provided by (used in) financing activities	(25,802)	9,466
Net increase (decrease) in cash	(5,885)	14,190
Cash at beginning of year	69,304	52,648
Cash at end of quarter	63,419	66,838
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	3,632	1,927
Cash paid during the period for taxes	1,775	93
Supplemental disclosures of non-cash activities:
Capital expenditures included in accounts payable	$ 671	$ 502

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 29, 2018
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 June 29, 2018 and June 30, 2017 were both 13 weeks. The six months then ended were both 26 weeks. References to the second quarters of 2018 and 2017 relate to the three months ended June 29, 2018 and June 30, 2017, respectively. References to fiscal year 2018 relate to our fiscal year ending December 28, 2018. 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. We base our estimates and judgments on historical experience and on various other assumptions that we believe 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. Revenue Recognition We recognize revenue when control of promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. This amount is recorded as net sales in our consolidated statements of operations. Transaction price – In most of our contracts, prices are generally determined by a customer-issued purchase order and generally remain fixed over the duration of the contract. Certain contracts contain variable consideration, including early-payment discounts and rebates. When a contract includes variable consideration, we evaluate the estimate of the variable consideration to determine whether the estimate needs to be constrained; therefore, we include the variable consideration in the transaction price only to the extent that it is probable that a significant reversal will not occur. Variable consideration estimates are updated at each reporting date. Historically, we have not incurred significant costs to obtain a contract. All amounts billed to a customer relating to shipping and handling are classified as net sales, while all costs incurred by us for shipping and handling are classified as cost of goods sold. Performance obligations – Substantially all of our performance obligations pertain to promised goods (“products”), which are primarily comprised of fluid delivery subsystems, weldments, and other components. Most of our contracts contain a single performance obligation. Product sales are recognized at a point-in-time, generally upon delivery, as such term is definied within the contract, as that is when control of the promised good has transferred. Products are covered by a standard assurance warranty, varying in length by customer, which promises that delivered products conform to contract specifications. As such, we account for such warranties under ASC 460, Guarantees , and not as a separate performance obligation. Contract balances – Accounts receivable represents our unconditional right to receive consideration from our customers. Accounts receivable are carried at invoice price less an estimate for doubtful accounts and estimated payment discounts. Payment terms vary by customer but are generally due within 15‑60 days. Historically, we have not incurred significant payment issues with our customers. We had no significant contract assets or liabilities on our consolidated balance sheets in any of the periods presented. Accounting Pronouncements Recently Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updated (“ASU”) 2014‑09, Revenue from Contracts with Customers (Topic 606) We adopted Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers , on December 30, 2017, the first day of fiscal year 2018, using the modified retrospective method. After assessing our contracts with our customers, we determined that there was not a significant change to the nature, timing, and extent of our revenues under the new standard. Accordingly, we did not make a cumulative-effect adjustment to retained earnings on December 30, 2017, as there was no adjustment to be made. In August 2016, the FASB issued ASU 2016‑15, Statement of Cash Flows – Classification of Certain Cash Receipts and Cash Payments . The amendment provides and clarifies guidance on the classification of certain cash receipts and cash payments in the statement of cash flows to eliminate diversity in practice. We adopted ASU 2016-15 on December 30, 2017, the first day of fiscal year 2018, which did not have a significant impact on our consolidated financial statements. In January 2017, the FASB issued ASU 2017 ‑ 01, Business Combinations (Topic 805): Clarifying the Definition of a Business . The amendments in this update clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We adopted ASU 2017 ‑ 01 on December 30, 2017, the first day of fiscal year 2018, which did not have a significant impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017‑09, Compensation-Stock Compensation (Topic 718) – Scope of Modification Accounting , which provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. We adopted ASU 2017‑09 on December 30, 2017, the first day of fiscal year 2018, which did not have a significant impact on our consolidated financial statements. Accounting Pronouncements Recently Issued In February 2016, the FASB issued ASU No. 2016‑02, Leases (Topic 842) , 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 us beginning in the first quarter of fiscal year 2019. We are currently evaluating the impact of this accounting standard.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 29, 2018
Business Combinations [Abstract]
Acquisitions	Note 2 – Acquisitions IAN Engineering Co., Ltd. On April 19, 2018, we completed the acquisition of IAN Engineering Co., Ltd. (“IAN”), a Seoul-based leader in providing locally-sourced design and manufacturing of gas delivery systems to customers in South Korea, for an aggregate purchase price of $6.5 million, inclusive of $5.3 million paid at closing and contingent consideration with a fair value of $1.3 million. Contingent consideration consists of an earn-out liability, included in our consolidated balance sheet, that becomes payable in 2019 and 2020 if certain financial targets are achieved. IAN provides us exposure to and growth opportunities in the South Korean semiconductor capital equipment market. The following table presents the preliminary purchase price allocation as of April 19, 2018: Preliminary Allocation April 19, 2018 Cash acquired $ 3,952 Accounts receivable 863 Inventories 1,870 Prepaid expenses and other current assets 56 Property and equipment 396 Other noncurrent assets 101 Intangible assets 1,559 Goodwill 2,856 Accounts payable (4,193 ) Accrued liabilities (452 ) Other current liabilities (82 ) Deferred tax liabilities (383 ) Total acquisition consideration $ 6,543 We preliminarily allocated $1.6 million to customer relationships with an amortization period of 6 years. Goodwill recognized from the acquisition was primarily attributed to an assembled workforce and expected synergies and is not tax deductible. The allocation of acquisition consideration for IAN is preliminary as we have not obtained all of the information to finalize our procedures on the opening balance sheet or the allocation between goodwill and intangible assets. We have recorded allocations based on information currently available. Our consolidated statements of operations for the three and six months ended June 29, 2018 include approximately two months of IAN operating activity, including revenue of $3.4 million. Talon Innovations Corporation On December 11, 2017, we completed the acquisition of Talon Innovations Corporation (“Talon”), a Minnesota-based leader in the design and manufacturing of high precision machined parts used in leading edge semiconductor tools, for $137.8 million. Talon expanded our capacity and capabilities in the area of component manufacturing for gas and chemical delivery tools used in semiconductor manufacturing and other industrial applications. The following table presents the preliminary purchase price allocation as of December 29, 2017 and June 29, 2018, as well as measurement period adjustments recorded during the one year measurement period. Measurement period adjustments primarily relate to the fair value of Talon’s opening balance of accounts receivable, inventory, income taxes payable, deferred taxes, and other working capital amounts. Preliminary Allocation December 29, 2017 Measurement Period Adjustment Preliminary Allocation June 29, 2018 Cash acquired $ 5,586 $ — $ 5,586 Accounts receivable 11,471 600 12,071 Inventories 19,399 209 19,608 Prepaid expenses and other current assets 182 — 182 Property and equipment 16,655 — 16,655 Other noncurrent assets 76 — 76 Intangible assets 38,000 — 38,000 Goodwill 74,594 (768 ) 73,826 Accounts payable (4,706 ) — (4,706 ) Accrued liabilities (2,767 ) 170 (2,597 ) Other current liabilities (1,838 ) 972 (866 ) Deferred tax liabilities (19,652 ) (388 ) (20,040 ) Total acquisition consideration $ 137,000 $ 795 $ 137,795 Cal-Weld, Inc. On July 27, 2017, we 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 $56.2 million. Cal‑Weld expanded our 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 December 29, 2017 and the final allocation on June 29, 2018, as well as measurement period adjustments recorded during the one year measurement period. Measurement period adjustments primarily relate to the fair value of Cal‑Weld’s opening balance of inventory, income taxes payable, and other working capital amounts. Preliminary Allocation December 29, 2017 Measurement Period Adjustment Final Allocation June 29, 2018 Cash acquired $ 7,337 $ — $ 7,337 Accounts receivable 10,318 — 10,318 Inventories 20,836 (388 ) 20,448 Prepaid expenses and other current assets 400 — 400 Property and equipment 1,639 — 1,639 Other noncurrent assets 587 — 587 Intangible assets 12,140 — 12,140 Goodwill 17,734 (143 ) 17,591 Accounts payable (5,991 ) — (5,991 ) Accrued liabilities (1,937 ) (173 ) (2,110 ) Other non-current liabilities (908 ) — (908 ) Deferred tax liabilities (5,276 ) 11 (5,265 ) Total acquisition consideration $ 56,879 $ (693 ) $ 56,186

Inventories

Inventories	6 Months Ended
	Jun. 29, 2018
Inventory Disclosure [Abstract]
Inventories	Note 3 – Inventories Inventories consist of the following: June 29, 2018 December 29, 2017 Raw materials $ 100,742 $ 91,109 Work in process 29,528 42,186 Finished goods 25,350 27,268 Excess and obsolete adjustment (7,554 ) (6,022 ) Total inventories, net $ 148,066 $ 154,541

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 29, 2018
Property Plant And Equipment [Abstract]
Property and Equipment	Note 4 – Property and Equipment Property and equipment consist of the following: June 29, 2018 December 29, 2017 Machinery $ 29,196 $ 23,464 Leasehold improvements 14,635 15,329 Computer software, hardware and equipment 4,652 4,551 Office furniture, fixtures and equipment 1,163 868 Vehicles 80 51 Construction-in-process 6,680 2,771 56,406 47,034 Less accumulated depreciation (16,801 ) (12,654 ) Total property and equipment, net $ 39,605 $ 34,380 Depreciation expense was $2.0 million and $0.9 million for the second quarter of 2018 and 2017, respectively, and $3.9 million and $1.6 million for the six months ended June 29, 2018 and June 30, 2017, respectively.

Intangible Assets and Goodwill

Intangible Assets and Goodwill	6 Months Ended
	Jun. 29, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	Note 5 – Intangible Assets and Goodwill Definite‑lived intangible assets consist of the following: June 29, 2018 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Weighted average useful life Trademarks $ 9,690 $ (6,298 ) $ — $ 3,392 10.0 years Customer relationships 82,986 (25,595 ) — 57,391 7.8 years Developed technology 22,990 (16,460 ) — 6,530 7.7 years Total intangible assets $ 115,666 $ (48,353 ) $ — $ 67,313 December 29, 2017 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Weighted average useful life Trademarks $ 9,690 $ (5,814 ) $ — $ 3,876 10.0 years Customer relationships 81,427 (20,060 ) — 61,367 7.8 years Developed technology 22,990 (14,938 ) — 8,052 7.7 years Backlog 660 (550 ) — 110 0.5 years Total intangible assets $ 114,767 $ (41,362 ) $ — $ 73,405 The following table presents changes to goodwill during the six months ended June 29, 2018: Goodwill Balance at December 29, 2017 $ 169,399 Acquisitions 1,945 Impairment — Balance at June 29, 2018 $ 171,344

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 29, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 6 – Commitments and Contingencies Operating Leases We lease offices under various non-cancellable net operating leases expiring through 2024. In addition to base rental payments, we are responsible for utilities and our proportionate share of operating expenses. Escalating rental payments are recognized on a straight‑line basis over the lease term. As of June 29, 2018, our future minimum rental payment obligation was $17.3 million. Litigation We are 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 our financial position or results of operations.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 29, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 – Income Taxes Income tax information for the periods reported are as follows: Three Months Ended Six Months Ended June 29, 2018 June 30, 2017 June 29, 2018 June 30, 2017 Income tax expense (benefit) from continuing operations $ (4,247 ) $ 473 $ (3,156 ) $ 998 Income from continuing operations before income taxes $ 23,793 $ 10,943 $ 41,605 $ 24,420 Effective income tax rate -17.8 % 4.3 % -7.6 % 4.1 % Our effective tax rate for the three and six months ended June 29, 2018 differs from the statutory rate due to taxes on foreign income that differ from the U.S. tax rate and the release of a valuation allowance against our foreign tax credit carryforwards. Our effective tax rate for the three and six months ended June 30, 2017 differs from the statutory rate due to a full valuation allowance that was provided against our U.S. net deferred tax assets, taxes on foreign income that differ from the U.S. tax rate, and accrued withholding taxes. During the second quarter of 2018, we determined that we would be able realize our foreign tax credit carryforwards as a result of additional analysis of the Tax Cuts and Jobs Act (the “Act”). As such, we recognized a $4.1 million discrete tax benefit in the second quarter of 2018 associated with the release of the valuation allowance on those credits. As of June 29, 2018, our accounting for the Act was not complete. The Company is still evaluating other changes under the Act, including the impacts of mandatory repatriation and the tax rate change. We expect to finalize these items in the fourth quarter of 2018. The ending balance for the unrecognized tax benefits for uncertain tax positions was approximately $2.2 million at June 29, 2018. The related interest and penalties were $0.1 million and $0.4 million, respectively. The uncertain tax positions that are reasonably possible to decrease in the next twelve months are insignificant. As of June 29, 2018, we were not under examination by tax authorities.

Employee Benefit Programs

Employee Benefit Programs	6 Months Ended
	Jun. 29, 2018
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Programs	Note 8 – Employee Benefit Programs 401(k) Plan We sponsor a 401(k) plan available to employees of our 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 $0.3 million and $0.2 million for the six months ended Medical Insurance We sponsor a self‑insured group medical insurance plan for our 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 our exposure. Expense incurred related to this plan was $2.5 million and $0.7 million for the six months ended

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 29, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Note 9 – Long-Term Debt Long‑term debt consists of the following: June 29, 2018 December 29, 2017 Term loan $ 172,812 $ 179,535 Revolving credit facility 17,162 10,000 Total principal amount of long-term debt 189,974 189,535 Less unamortized debt issuance costs (4,399 ) (2,798 ) Total long-term debt, net 185,575 186,737 Less current portion (8,750 ) (6,490 ) Total long-term debt, less current portion, net $ 176,825 $ 180,247 On February 15, 2018, we amended and restated our credit agreement (the “amendment”), which replaced our existing credit facilities with a $175.0 million term loan and a revolving credit facility (the “revolver”) allowing for borrowings up to $125.0 million. Additionally, the amendment reduced our borrowing rate, depending on our leverage ratio, and extended the maturity date. We incurred debt issuance costs of $2.1 million in connection with the amendment. The amendment did not meet the definition of an extinguishment and was accounted for as a debt modification. Interest is charged at either the Base Rate or the Eurodollar rate (as such terms are defined in the credit agreement) at our option, plus an applicable margin. The Base Rate is equal to the higher of i) the Prime Rate, ii) the Federal Funds 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 0.75‑1.50% and 1.75‑2.50% per annum, respectively, depending on our leverage ratio. We are also charged a commitment fee of 0.20%-0.35% on the unused portion of our revolver. Base Rate interest payments and commitment fees are due quarterly. Eurodollar interest payments are due on the last day of the applicable interest period. At June 29, 2018, the term loan and revolver bore interest at the Eurodollar rate option of 4.73% and 4.43%, respectively. Term loan principal payments of $2.2 million are due on a quarterly basis. The term loan and revolver mature on February 15, 2023.

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 29, 2018
Equity [Abstract]
Shareholders' Equity	Note 10 – Shareholders’ Equity Share Repurchase Program In February 2018, our board of directors authorized a share repurchase program up to $50.0 million under which we may repurchase our ordinary shares in the open market or through privately negotiated transactions, depending on market conditions and other factors. Ordinary shares repurchased are recorded as treasury shares using the cost method on a first-in, first-out basis. During the six months ended June 29, 2018, we repurchased 1,257,605 ordinary shares for a total cost of $30.0 million at an average price of $23.83 per share. At June 29, 2018, $20.0 million remained available to repurchase ordinary shares under the repurchase program.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 29, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	Note 11 – Share‑Based Compensation The 2016 Omnibus Incentive Plan (the “2016 Plan”) provides 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 share awards or restricted share units (“restricted shares”), performance awards, and other share‑based awards. Awards generally vest over four years, 25% on the first anniversary and quarterly thereafter. Upon vesting of restricted shares, employees may elect to have shares withheld to cover statutory minimum withholding taxes. Shares withheld are not reflected as an issuance of ordinary shares within our consolidated statements of shareholders’ equity, as the shares were never issued, and the associated tax payments are reflected as financing activities within our consolidated statements of cash flows. Share‑based compensation expense across all plans for stock options, restricted shares, and employee share purchase rights was $1.2 million and $0.6 million for the second quarter of 2018 and 2017, respectively, and $5.0 million and $0.9 million for the six months ended June 29, 2018 and June 30, 2017, respectively. On January 18, 2018, in connection with the resignation of our former Chief Financial Officer, certain separation benefits became effective, which includes a vesting acceleration of all outstanding and unvested stock options and restricted shares. Consequently, 88,445 stock options and 39,175 restricted shares vested on January 18, 2018. This was accounted for as an equity award modification under ASC Topic 718, resulting in $2.9 million in share-based compensation expense. Stock Options The following table summarizes stock option activity: 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 29, 2017 1,452,825 215,908 $ 12.87 Granted 743,100 — $ 24.92 Exercised (412,232 ) (150,000 ) $ 9.80 Forfeited (29,000 ) — $ 22.89 Expired — — $ — Outstanding, June 29, 2018 1,754,693 65,908 $ 18.57 5.2 years $ 7,799 Exercisable, June 29, 2018 482,513 65,908 $ 10.87 2.7 years $ 5,678 Restricted Shares The following table summarizes restricted share activity: Number of Restricted Shares Time vesting Weighted average grant date fair value Unvested, December 29, 2017 153,281 $ 17.53 Granted 98,100 $ 24.82 Vested (62,373 ) $ 13.11 Forfeited — $ — Unvested, June 29, 2018 189,008 $ 22.77 Employee Share Purchase Plan The 2017 Employee Stock Purchase Plan (the “2017 ESPP”) grants employees the ability to designate a portion of their base-pay to purchase ordinary shares at a price equal to 85% of the fair market value of our ordinary shares on the first or last day of each 6 month purchase period. Purchase periods begin on January 1 or July 1 and end on June 30 or December 31, or the next business day if such date is not a business day. Shares are purchased on the last day of the purchase period. During the six months ended June 29, 2018, 10,781 ordinary shares were purchased by eligible employees under the 2017 ESPP. As of June 29, 2018, 2.5 million ordinary shares remain available for purchase under the 2017 ESPP.

Segment Information

Segment Information	6 Months Ended
	Jun. 29, 2018
Segment Reporting [Abstract]
Segment Information	Note 12 – Segment Information Our Chief Operating Decision Maker, the Chief Executive Officer, reviews our results of operations on a consolidated level and executive staff is structured by function rather than by product category. Therefore, we operate in one operating segment. Key resources, decisions, and assessment of performance are also analyzed on a company‑wide level. Foreign operations are conducted primarily through our wholly owned subsidiaries in Singapore and Malaysia. Our 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: Three Months Ended Six Months Ended June 29, 2018 June 30, 2017 June 29, 2018 June 30, 2017 United States of America $ 151,404 $ 88,544 $ 313,644 $ 166,639 Singapore 71,481 62,584 145,217 122,524 Europe 16,037 5,977 28,873 12,376 Other 10,051 2,628 19,268 6,898 Total net sales $ 248,973 $ 159,733 $ 507,002 $ 308,437

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 29, 2018
Earnings Per Share [Abstract]
Earnings per Share	Note 13 – Earnings per Share The following table sets forth the computation of basic and diluted earnings per share and a reconciliation of the numerator and denominator used in the calculation: Three Months Ended Six Months Ended June 29, 2018 June 30, 2017 June 29, 2018 June 30, 2017 Numerator: Net income from continuing operations $ 28,040 $ 10,470 $ 44,761 $ 23,422 Net loss from discontinued operations $ — $ (610 ) $ — $ (722 ) Net income $ 28,040 $ 9,860 $ 44,761 $ 22,700 Denominator: Weighted average ordinary shares outstanding 25,674,173 24,848,365 25,852,235 24,751,390 Dilutive effect of stock options 419,867 1,162,889 539,577 1,067,393 Dilutive effect of restricted shares 23,820 52,273 33,538 49,620 Dilutive effect of employee share purchase plan 2,857 — 2,857 — Weighted average number of shares used in diluted per share calculation for net income and net income from continuing operations 26,120,717 26,063,527 26,428,207 25,868,403 Weighted average ordinary shares outstanding 25,674,173 24,848,365 25,852,235 24,751,390 Dilutive effect of stock options — — — — Dilutive effect of restricted shares — — — — Dilutive effect of employee share purchase plan — — — — Weighted average number of shares used in diluted per share calculation for net loss from discontinued operations 25,674,173 24,848,365 25,852,235 24,751,390 Earnings per share: Net income from continuing operations: Basic $ 1.09 $ 0.42 $ 1.73 $ 0.95 Diluted $ 1.07 $ 0.40 $ 1.69 $ 0.91 Net loss from discontinued operations: Basic $ — $ (0.02 ) $ — $ (0.03 ) Diluted $ — $ (0.02 ) $ — $ (0.03 ) Net income: Basic $ 1.09 $ 0.40 $ 1.73 $ 0.92 Diluted $ 1.07 $ 0.38 $ 1.69 $ 0.88 An aggregated total of 435,117, 105,471, 384,162, and 192,558 potential ordinary shares have been excluded from the computation of diluted net income per share and diluted net income from continuing operations per share for the

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 29, 2018
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. In 2017, we accrued for remaining costs to occupy the facility through its lease expiration in February 2018. The discontinued operation was deemed to be fully disposed of at December 29, 2017. Accordingly, there was no activity associated with the discontinued operation during the six months ended June 29, 2018. The following table represents the carrying amounts of the major classes of assets and liabilities of our discontinued operation: December 29, 2017 Assets Current assets: Prepaid expenses and other current assets $ 3 Total current assets 3 Total assets $ 3 Liabilities Current liabilities: Accounts payable $ 136 Accrued liabilities 255 Other current liabilities 9 Total current liabilities 400 Total liabilities $ 400 The following table represents results of our discontinued operation: Three Months Ended Six Months Ended June 30, 2017 June 30, 2017 Operating expenses: Selling, general, and administrative 610 721 Total operating expenses 610 721 Operating loss (610 ) (721 ) Loss from discontinued operations before income taxes (610 ) (721 ) Income tax expense — 1 Loss from discontinued operations $ (610 ) $ (722 )

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 29, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 15 – Subsequent Events Ordinary Share Repurchases In July 2018, we repurchased 936,092 ordinary shares for a total cost of $20.0 million at an average price of $21.37 per share pursuant to our previously announced share repurchase program.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 29, 2018
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 June 29, 2018 and June 30, 2017 were both 13 weeks. The six months then ended were both 26 weeks. References to the second quarters of 2018 and 2017 relate to the three months ended June 29, 2018 and June 30, 2017, respectively. References to fiscal year 2018 relate to our fiscal year ending December 28, 2018.
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. We base our estimates and judgments on historical experience and on various other assumptions that we believe 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.
Revenue Recognition	Revenue Recognition We recognize revenue when control of promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. This amount is recorded as net sales in our consolidated statements of operations. Transaction price – In most of our contracts, prices are generally determined by a customer-issued purchase order and generally remain fixed over the duration of the contract. Certain contracts contain variable consideration, including early-payment discounts and rebates. When a contract includes variable consideration, we evaluate the estimate of the variable consideration to determine whether the estimate needs to be constrained; therefore, we include the variable consideration in the transaction price only to the extent that it is probable that a significant reversal will not occur. Variable consideration estimates are updated at each reporting date. Historically, we have not incurred significant costs to obtain a contract. All amounts billed to a customer relating to shipping and handling are classified as net sales, while all costs incurred by us for shipping and handling are classified as cost of goods sold. Performance obligations – Substantially all of our performance obligations pertain to promised goods (“products”), which are primarily comprised of fluid delivery subsystems, weldments, and other components. Most of our contracts contain a single performance obligation. Product sales are recognized at a point-in-time, generally upon delivery, as such term is definied within the contract, as that is when control of the promised good has transferred. Products are covered by a standard assurance warranty, varying in length by customer, which promises that delivered products conform to contract specifications. As such, we account for such warranties under ASC 460, Guarantees , and not as a separate performance obligation. Contract balances – Accounts receivable represents our unconditional right to receive consideration from our customers. Accounts receivable are carried at invoice price less an estimate for doubtful accounts and estimated payment discounts. Payment terms vary by customer but are generally due within 15‑60 days. Historically, we have not incurred significant payment issues with our customers. We had no significant contract assets or liabilities on our consolidated balance sheets in any of the periods presented.
Accounting Pronouncements Recently Adopted	Accounting Pronouncements Recently Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updated (“ASU”) 2014‑09, Revenue from Contracts with Customers (Topic 606) We adopted Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers , on December 30, 2017, the first day of fiscal year 2018, using the modified retrospective method. After assessing our contracts with our customers, we determined that there was not a significant change to the nature, timing, and extent of our revenues under the new standard. Accordingly, we did not make a cumulative-effect adjustment to retained earnings on December 30, 2017, as there was no adjustment to be made. In August 2016, the FASB issued ASU 2016‑15, Statement of Cash Flows – Classification of Certain Cash Receipts and Cash Payments . The amendment provides and clarifies guidance on the classification of certain cash receipts and cash payments in the statement of cash flows to eliminate diversity in practice. We adopted ASU 2016-15 on December 30, 2017, the first day of fiscal year 2018, which did not have a significant impact on our consolidated financial statements. In January 2017, the FASB issued ASU 2017 ‑ 01, Business Combinations (Topic 805): Clarifying the Definition of a Business . The amendments in this update clarify the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. We adopted ASU 2017 ‑ 01 on December 30, 2017, the first day of fiscal year 2018, which did not have a significant impact on our consolidated financial statements. In May 2017, the FASB issued ASU 2017‑09, Compensation-Stock Compensation (Topic 718) – Scope of Modification Accounting , which provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. We adopted ASU 2017‑09 on December 30, 2017, the first day of fiscal year 2018, which did not have a significant impact on our consolidated financial statements. Accounting Pronouncements Recently Issued In February 2016, the FASB issued ASU No. 2016‑02, Leases (Topic 842) , 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 us beginning in the first quarter of fiscal year 2019. We are currently evaluating the impact of this accounting standard.

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 29, 2018
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 April 19, 2018: Preliminary Allocation April 19, 2018 Cash acquired $ 3,952 Accounts receivable 863 Inventories 1,870 Prepaid expenses and other current assets 56 Property and equipment 396 Other noncurrent assets 101 Intangible assets 1,559 Goodwill 2,856 Accounts payable (4,193 ) Accrued liabilities (452 ) Other current liabilities (82 ) Deferred tax liabilities (383 ) Total acquisition consideration $ 6,543 The following table presents the preliminary purchase price allocation as of December 29, 2017 and June 29, 2018, as well as measurement period adjustments recorded during the one year measurement period. Measurement period adjustments primarily relate to the fair value of Talon’s opening balance of accounts receivable, inventory, income taxes payable, deferred taxes, and other working capital amounts. Preliminary Allocation December 29, 2017 Measurement Period Adjustment Preliminary Allocation June 29, 2018 Cash acquired $ 5,586 $ — $ 5,586 Accounts receivable 11,471 600 12,071 Inventories 19,399 209 19,608 Prepaid expenses and other current assets 182 — 182 Property and equipment 16,655 — 16,655 Other noncurrent assets 76 — 76 Intangible assets 38,000 — 38,000 Goodwill 74,594 (768 ) 73,826 Accounts payable (4,706 ) — (4,706 ) Accrued liabilities (2,767 ) 170 (2,597 ) Other current liabilities (1,838 ) 972 (866 ) Deferred tax liabilities (19,652 ) (388 ) (20,040 ) Total acquisition consideration $ 137,000 $ 795 $ 137,795 The following table presents the preliminary purchase price allocation as of December 29, 2017 and the final allocation on June 29, 2018, as well as measurement period adjustments recorded during the one year measurement period. Measurement period adjustments primarily relate to the fair value of Cal‑Weld’s opening balance of inventory, income taxes payable, and other working capital amounts. Preliminary Allocation December 29, 2017 Measurement Period Adjustment Final Allocation June 29, 2018 Cash acquired $ 7,337 $ — $ 7,337 Accounts receivable 10,318 — 10,318 Inventories 20,836 (388 ) 20,448 Prepaid expenses and other current assets 400 — 400 Property and equipment 1,639 — 1,639 Other noncurrent assets 587 — 587 Intangible assets 12,140 — 12,140 Goodwill 17,734 (143 ) 17,591 Accounts payable (5,991 ) — (5,991 ) Accrued liabilities (1,937 ) (173 ) (2,110 ) Other non-current liabilities (908 ) — (908 ) Deferred tax liabilities (5,276 ) 11 (5,265 ) Total acquisition consideration $ 56,879 $ (693 ) $ 56,186

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 29, 2018
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consist of the following: June 29, 2018 December 29, 2017 Raw materials $ 100,742 $ 91,109 Work in process 29,528 42,186 Finished goods 25,350 27,268 Excess and obsolete adjustment (7,554 ) (6,022 ) Total inventories, net $ 148,066 $ 154,541

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 29, 2018
Property Plant And Equipment [Abstract]
Summary of Property and Equipment	Property and equipment consist of the following: June 29, 2018 December 29, 2017 Machinery $ 29,196 $ 23,464 Leasehold improvements 14,635 15,329 Computer software, hardware and equipment 4,652 4,551 Office furniture, fixtures and equipment 1,163 868 Vehicles 80 51 Construction-in-process 6,680 2,771 56,406 47,034 Less accumulated depreciation (16,801 ) (12,654 ) Total property and equipment, net $ 39,605 $ 34,380

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)	6 Months Ended
	Jun. 29, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Definite-Lived Intangible Assets	Definite‑lived intangible assets consist of the following: June 29, 2018 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Weighted average useful life Trademarks $ 9,690 $ (6,298 ) $ — $ 3,392 10.0 years Customer relationships 82,986 (25,595 ) — 57,391 7.8 years Developed technology 22,990 (16,460 ) — 6,530 7.7 years Total intangible assets $ 115,666 $ (48,353 ) $ — $ 67,313 December 29, 2017 Gross value Accumulated amortization Accumulated impairment charges Carrying amount Weighted average useful life Trademarks $ 9,690 $ (5,814 ) $ — $ 3,876 10.0 years Customer relationships 81,427 (20,060 ) — 61,367 7.8 years Developed technology 22,990 (14,938 ) — 8,052 7.7 years Backlog 660 (550 ) — 110 0.5 years Total intangible assets $ 114,767 $ (41,362 ) $ — $ 73,405
Schedule of Changes in Goodwill	The following table presents changes to goodwill during the six months ended June 29, 2018: Goodwill Balance at December 29, 2017 $ 169,399 Acquisitions 1,945 Impairment — Balance at June 29, 2018 $ 171,344

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 29, 2018
Income Tax Disclosure [Abstract]
Schedule of income from continuing operations before tax	Income tax information for the periods reported are as follows: Three Months Ended Six Months Ended June 29, 2018 June 30, 2017 June 29, 2018 June 30, 2017 Income tax expense (benefit) from continuing operations $ (4,247 ) $ 473 $ (3,156 ) $ 998 Income from continuing operations before income taxes $ 23,793 $ 10,943 $ 41,605 $ 24,420 Effective income tax rate -17.8 % 4.3 % -7.6 % 4.1 %

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 29, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long‑term debt consists of the following: June 29, 2018 December 29, 2017 Term loan $ 172,812 $ 179,535 Revolving credit facility 17,162 10,000 Total principal amount of long-term debt 189,974 189,535 Less unamortized debt issuance costs (4,399 ) (2,798 ) Total long-term debt, net 185,575 186,737 Less current portion (8,750 ) (6,490 ) Total long-term debt, less current portion, net $ 176,825 $ 180,247

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 29, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Stock Option Activity	The following table summarizes stock option activity: 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 29, 2017 1,452,825 215,908 $ 12.87 Granted 743,100 — $ 24.92 Exercised (412,232 ) (150,000 ) $ 9.80 Forfeited (29,000 ) — $ 22.89 Expired — — $ — Outstanding, June 29, 2018 1,754,693 65,908 $ 18.57 5.2 years $ 7,799 Exercisable, June 29, 2018 482,513 65,908 $ 10.87 2.7 years $ 5,678
Schedule of Restricted Share Activity	The following table summarizes restricted share activity: Number of Restricted Shares Time vesting Weighted average grant date fair value Unvested, December 29, 2017 153,281 $ 17.53 Granted 98,100 $ 24.82 Vested (62,373 ) $ 13.11 Forfeited — $ — Unvested, June 29, 2018 189,008 $ 22.77

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 29, 2018
Segment Reporting [Abstract]
Schedule of Sales By Geographic Area	The following table sets forth sales by geographic area: Three Months Ended Six Months Ended June 29, 2018 June 30, 2017 June 29, 2018 June 30, 2017 United States of America $ 151,404 $ 88,544 $ 313,644 $ 166,639 Singapore 71,481 62,584 145,217 122,524 Europe 16,037 5,977 28,873 12,376 Other 10,051 2,628 19,268 6,898 Total net sales $ 248,973 $ 159,733 $ 507,002 $ 308,437

Earnings per Share (Tables)

Earnings per Share (Tables)	6 Months Ended
	Jun. 29, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share and a reconciliation of the numerator and denominator used in the calculation: Three Months Ended Six Months Ended June 29, 2018 June 30, 2017 June 29, 2018 June 30, 2017 Numerator: Net income from continuing operations $ 28,040 $ 10,470 $ 44,761 $ 23,422 Net loss from discontinued operations $ — $ (610 ) $ — $ (722 ) Net income $ 28,040 $ 9,860 $ 44,761 $ 22,700 Denominator: Weighted average ordinary shares outstanding 25,674,173 24,848,365 25,852,235 24,751,390 Dilutive effect of stock options 419,867 1,162,889 539,577 1,067,393 Dilutive effect of restricted shares 23,820 52,273 33,538 49,620 Dilutive effect of employee share purchase plan 2,857 — 2,857 — Weighted average number of shares used in diluted per share calculation for net income and net income from continuing operations 26,120,717 26,063,527 26,428,207 25,868,403 Weighted average ordinary shares outstanding 25,674,173 24,848,365 25,852,235 24,751,390 Dilutive effect of stock options — — — — Dilutive effect of restricted shares — — — — Dilutive effect of employee share purchase plan — — — — Weighted average number of shares used in diluted per share calculation for net loss from discontinued operations 25,674,173 24,848,365 25,852,235 24,751,390 Earnings per share: Net income from continuing operations: Basic $ 1.09 $ 0.42 $ 1.73 $ 0.95 Diluted $ 1.07 $ 0.40 $ 1.69 $ 0.91 Net loss from discontinued operations: Basic $ — $ (0.02 ) $ — $ (0.03 ) Diluted $ — $ (0.02 ) $ — $ (0.03 ) Net income: Basic $ 1.09 $ 0.40 $ 1.73 $ 0.92 Diluted $ 1.07 $ 0.38 $ 1.69 $ 0.88

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 29, 2018
Discontinued Operations And Disposal Groups [Abstract]
Schedule of Carrying Amounts of Major Classes of Assets and Liabilities of Discontinued Operation and Results of Discontinued Operation	The following table represents the carrying amounts of the major classes of assets and liabilities of our discontinued operation: December 29, 2017 Assets Current assets: Prepaid expenses and other current assets $ 3 Total current assets 3 Total assets $ 3 Liabilities Current liabilities: Accounts payable $ 136 Accrued liabilities 255 Other current liabilities 9 Total current liabilities 400 Total liabilities $ 400 The following table represents results of our discontinued operation: Three Months Ended Six Months Ended June 30, 2017 June 30, 2017 Operating expenses: Selling, general, and administrative 610 721 Total operating expenses 610 721 Operating loss (610 ) (721 ) Loss from discontinued operations before income taxes (610 ) (721 ) Income tax expense — 1 Loss from discontinued operations $ (610 ) $ (722 )

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Apr. 19, 2018	Dec. 11, 2017	Jul. 27, 2017	Jun. 29, 2018	Jun. 29, 2018
IAN Engineering Co., Ltd.
Business Acquisition [Line Items]
Acquisition amount	$ 6,500
Cash paid for acquisition	5,300
Contingent consideration with fair value	1,300
Net sales attributable to acquiree included in statement of operations				$ 3,400	$ 3,400
IAN Engineering Co., Ltd. | Customer Relationships
Business Acquisition [Line Items]
Allocated intangible assets	$ 1,600
Weighted average amortization period	6 years
Talon
Business Acquisition [Line Items]
Acquisition amount		$ 137,800			137,795
Allocated intangible assets				38,000	38,000
Cal Weld, Inc.
Business Acquisition [Line Items]
Acquisition amount			$ 56,200		56,186
Allocated intangible assets				$ 12,140	$ 12,140

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	Apr. 19, 2018	Dec. 29, 2017	Dec. 11, 2017	Jul. 27, 2017	Jun. 29, 2018
Business Acquisition [Line Items]
Goodwill		$ 169,399			$ 171,344
IAN Engineering Co., Ltd.
Business Acquisition [Line Items]
Total acquisition consideration	$ 6,500
IAN Engineering Co., Ltd. | Preliminary Allocation
Business Acquisition [Line Items]
Cash acquired	3,952
Accounts receivable	863
Inventories	1,870
Prepaid expenses and other current assets	56
Property and equipment	396
Other noncurrent assets	101
Intangible assets	1,559
Goodwill	2,856
Accounts payable	(4,193)
Accrued liabilities	(452)
Other current liabilities	(82)
Deferred tax liabilities	(383)
Total acquisition consideration	$ 6,543
Talon
Business Acquisition [Line Items]
Cash acquired					5,586
Accounts receivable					12,071
Inventories					19,608
Prepaid expenses and other current assets					182
Property and equipment					16,655
Other noncurrent assets					76
Intangible assets					38,000
Goodwill					73,826
Accounts payable					(4,706)
Accrued liabilities					(2,597)
Other current liabilities					(866)
Deferred tax liabilities					(20,040)
Total acquisition consideration			$ 137,800		137,795
Talon | Preliminary Allocation
Business Acquisition [Line Items]
Cash acquired		5,586
Accounts receivable		11,471
Inventories		19,399
Prepaid expenses and other current assets		182
Property and equipment		16,655
Other noncurrent assets		76
Intangible assets		38,000
Goodwill		74,594
Accounts payable		(4,706)
Accrued liabilities		(2,767)
Other current liabilities		(1,838)
Deferred tax liabilities		(19,652)
Total acquisition consideration		137,000
Talon | Measurement Period Adjustment
Business Acquisition [Line Items]
Accounts receivable					600
Inventories					209
Goodwill					(768)
Accrued liabilities					170
Other current liabilities					972
Deferred tax liabilities					(388)
Total acquisition consideration					795
Cal Weld, Inc.
Business Acquisition [Line Items]
Cash acquired					7,337
Accounts receivable					10,318
Inventories					20,448
Prepaid expenses and other current assets					400
Property and equipment					1,639
Other noncurrent assets					587
Intangible assets					12,140
Goodwill					17,591
Accounts payable					(5,991)
Accrued liabilities					(2,110)
Other non-current liabilities					(908)
Deferred tax liabilities					(5,265)
Total acquisition consideration				$ 56,200	56,186
Cal Weld, Inc. | Preliminary Allocation
Business Acquisition [Line Items]
Cash acquired		7,337
Accounts receivable		10,318
Inventories		20,836
Prepaid expenses and other current assets		400
Property and equipment		1,639
Other noncurrent assets		587
Intangible assets		12,140
Goodwill		17,734
Accounts payable		(5,991)
Accrued liabilities		(1,937)
Other non-current liabilities		(908)
Deferred tax liabilities		(5,276)
Total acquisition consideration		$ 56,879
Cal Weld, Inc. | Measurement Period Adjustment
Business Acquisition [Line Items]
Inventories					(388)
Goodwill					(143)
Accrued liabilities					(173)
Deferred tax liabilities					11
Total acquisition consideration					$ (693)

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 29, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 100,742	$ 91,109
Work in process	29,528	42,186
Finished goods	25,350	27,268
Excess and obsolete adjustment	(7,554)	(6,022)
Total inventories, net	$ 148,066	$ 154,541

Property and Equipment - Summar

Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 29, 2017
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 56,406	$ 47,034
Less accumulated depreciation	(16,801)	(12,654)
Total property and equipment, net	39,605	34,380
Machinery
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	29,196	23,464
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	14,635	15,329
Office Furniture, Fixtures and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	1,163	868
Vehicles
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	80	51
Construction-In-Progress
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	6,680	2,771
Computer Software, Hardware and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 4,652	$ 4,551

Property and Equipment - Additi

Property and Equipment - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Property Plant And Equipment [Abstract]
Depreciation expense	$ 2	$ 0.9	$ 3.9	$ 1.6

Intangible Assets and Goodwil38

Intangible Assets and Goodwill - Schedule of Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 29, 2018	Dec. 29, 2017
Finite Lived Intangible Assets [Line Items]
Gross value	$ 115,666	$ 114,767
Accumulated amortization	(48,353)	(41,362)
Carrying amount	67,313	73,405
Trademarks
Finite Lived Intangible Assets [Line Items]
Gross value	9,690	9,690
Accumulated amortization	(6,298)	(5,814)
Carrying amount	$ 3,392	$ 3,876
Trademarks | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average useful life	10 years	10 years
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross value	$ 82,986	$ 81,427
Accumulated amortization	(25,595)	(20,060)
Carrying amount	$ 57,391	$ 61,367
Customer Relationships | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average useful life	7 years 9 months 18 days	7 years 9 months 18 days
Developed Technology
Finite Lived Intangible Assets [Line Items]
Gross value	$ 22,990	$ 22,990
Accumulated amortization	(16,460)	(14,938)
Carrying amount	$ 6,530	$ 8,052
Developed Technology | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average useful life	7 years 8 months 12 days	7 years 8 months 12 days
Backlog
Finite Lived Intangible Assets [Line Items]
Gross value		$ 660
Accumulated amortization		(550)
Carrying amount		$ 110
Backlog | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted average useful life		6 months

Intangible Assets and Goodwil39

Intangible Assets and Goodwill - Schedule of Changes in Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 29, 2018USD ($)
Goodwill [Roll Forward]
Goodwill balance	$ 169,399
Acquisitions	1,945
Goodwill balance	$ 171,344

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Millions	Jun. 29, 2018USD ($)
Commitments And Contingencies Disclosure [Abstract]
Future minimum rental payment obligation	$ 17.3
Non-cancellable net operating lease expiration year	2,024

Income Taxes - Summary of Infor

Income Taxes - Summary of Information on Company's Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income tax expense (benefit) from continuing operations	$ (4,247)	$ 473	$ (3,156)	$ 998
Income from continuing operations before income taxes	$ 23,793	$ 10,943	$ 41,605	$ 24,420
Effective income tax rate	(17.80%)	4.30%	(7.60%)	4.10%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) $ in Millions	3 Months Ended
	Jun. 29, 2018USD ($)
Income Tax Disclosure [Abstract]
Foreign tax credit carryforwards, recognized discrete tax benefit	$ 4.1
Unrecognized tax benefits for uncertain tax positions	2.2
Unrecognized tax benefits for uncertain tax positions related interest	0.1
Unrecognized tax benefits for uncertain tax positions related penalties	$ 0.4

Employee Benefit Programs - Add

Employee Benefit Programs - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Defined Contribution Plan Disclosure [Line Items]
Percentage of maximum annual contributions per employee			50.00%	50.00%
Percentage of eligible employee receive discretionary matching contribution			50.00%	50.00%
Employee matching contributions	$ 300,000	$ 200,000	$ 800,000	$ 300,000
Expense incurred related to self-insured plan	$ 2,500,000	$ 700,000	5,100,000	$ 1,400,000
Maximum
Defined Contribution Plan Disclosure [Line Items]
Maximum annual discretionary contribution amount			$ 2,500

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 29, 2018	Dec. 29, 2017
Line Of Credit Facility [Line Items]
Total principal amount of long-term debt	$ 189,974	$ 189,535
Less unamortized debt issuance costs	(4,399)	(2,798)
Total long-term debt, net	185,575	186,737
Less current portion	(8,750)	(6,490)
Long-term debt, less current portion, net	176,825	180,247
Term Loan
Line Of Credit Facility [Line Items]
Total principal amount of long-term debt	172,812	179,535
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Total principal amount of long-term debt	$ 17,162	$ 10,000

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($)	Feb. 15, 2018	Jun. 29, 2018	Dec. 29, 2017
Line Of Credit Facility [Line Items]
Principal amount of long-term debt		$ 189,974,000	$ 189,535,000
Amended and Restated Credit Agreement
Line Of Credit Facility [Line Items]
Debt issuance costs	$ 2,100,000
Description of interest rate		The Base Rate is equal to the higher of i) the Prime Rate, ii) the Federal Funds 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 0.751.50% and 1.752.50% per annum, respectively, depending on our leverage ratio.
Amended and Restated Credit Agreement | Federal Fund Rate
Line Of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Amended and Restated Credit Agreement | Eurodollar
Line Of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Frequency of interest payment		Last day of the applicable interest period
Amended and Restated Credit Agreement | Eurodollar | Minimum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	1.75%
Amended and Restated Credit Agreement | Eurodollar | Maximum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	2.50%
Amended and Restated Credit Agreement | Base Rate
Line Of Credit Facility [Line Items]
Frequency of interest payment		Quarterly
Amended and Restated Credit Agreement | Base Rate | Minimum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	0.75%
Amended and Restated Credit Agreement | Base Rate | Maximum
Line Of Credit Facility [Line Items]
Additional basis spread on variable rate	1.50%
Term Loan
Line Of Credit Facility [Line Items]
Principal amount of long-term debt		$ 172,812,000	179,535,000
Term Loan | Amended and Restated Credit Agreement
Line Of Credit Facility [Line Items]
Principal amount of long-term debt	$ 175,000,000
Credit facility, periodic principal payments		$ 2,200,000
Principal payments maturity date		Feb. 15, 2023
Credit facility, frequency of principal payments		quarterly
Term Loan | Amended and Restated Credit Agreement | Eurodollar
Line Of Credit Facility [Line Items]
Interest rate		4.73%
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Principal amount of long-term debt		$ 17,162,000	$ 10,000,000
Revolving Credit Facility | Amended and Restated Credit Agreement
Line Of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 125,000,000
Principal payments maturity date		Feb. 15, 2023
Revolving Credit Facility | Amended and Restated Credit Agreement | Eurodollar
Line Of Credit Facility [Line Items]
Interest rate		4.43%

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 29, 2018	Feb. 28, 2018
Equity [Abstract]
Share repurchase program, authorized amount		$ 50,000
Shares repurchased during period, shares	1,257,605
Shares repurchased during period, value	$ 29,970
Average price of repurchased ordinary shares	$ 23.83
Ordinary shares available for repurchase	$ 20,000

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	Jan. 18, 2018	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense for stock options, restricted shares and employee share purchase rights across all plans		$ 1,200	$ 600	$ 5,000	$ 900
Share-based compensation				$ 5,006	$ 913
Accounting Standards Update 2016-09
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 2,900
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options vested	88,445
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of restricted shares vested	39,175
The 2016 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting description				Awards generally vest over four years, 25% on the first anniversary and quarterly thereafter.
Awards vesting period				4 years
Awards vesting percentage				25.00%
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%
Ordinary shares purchased by eligible employees during the period				10,781
Ordinary shares remain available for purchase				2,500,000

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Stock Option Activity (Details) - Stock Options $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 29, 2018USD ($)$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average exercise price per share, Outstanding, Beginning Balance | $ / shares	$ 12.87
Weighted average exercise price per share, Granted | $ / shares	24.92
Weighted average exercise price per share, Exercised | $ / shares	9.80
Weighted average exercise price per share, Forfeited | $ / shares	22.89
Weighted average exercise price per share, Expired | $ / shares	0
Weighted average exercise price per share, Outstanding, Ending Balance | $ / shares	18.57
Weighted average exercise price per share, Exercisable | $ / shares	$ 10.87
Weighted average remaining contractual term, Outstanding	5 years 2 months 12 days
Weighted average remaining contractual term, Exercisable	2 years 8 months 12 days
Aggregate intrinsic value, Outstanding | $	$ 7,799
Aggregate intrinsic value, Exercisable | $	$ 5,678
Time Vesting
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Stock Options, Outstanding, Beginning Balance	1,452,825
Number of Stock Options, Granted	743,100
Number of Stock Options, Exercised	(412,232)
Number of Stock Options, Forfeited	(29,000)
Number of Stock Options, Expired	0
Number of Stock Options, Outstanding, Ending Balance	1,754,693
Number of Stock Options, Exercisable	482,513
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	(150,000)
Number of Stock Options, Expired	0
Number of Stock Options, Outstanding, Ending Balance	65,908
Number of Stock Options, Exercisable	65,908

Share-Based Compensation - Sc49

Share-Based Compensation - Schedule of Restricted Share Activity (Details)	6 Months Ended
	Jun. 29, 2018$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value, Unvested, Beginning Balance | $ / shares	$ 17.53
Weighted average grant date fair value, Granted | $ / shares	24.82
Weighted average grant date fair value, Vested | $ / shares	13.11
Weighted average grant date fair value, Forfeited | $ / shares	0
Weighted average grant date fair value, Unvested, Ending Balance | $ / shares	$ 22.77
Time Vesting Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Restricted Shares, Unvested, Beginning Balance | shares	153,281
Number of Restricted Shares, Granted | shares	98,100
Number of Restricted Shares, Vested | shares	(62,373)
Number of Restricted Shares, Forfeited | shares	0
Number of Restricted Shares, Unvested, Ending Balance | shares	189,008

Segment Information - Additiona

Segment Information - Additional Information (Details)	6 Months Ended
	Jun. 29, 2018Segment
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		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Total net sales	$ 248,973	$ 159,733	$ 507,002	$ 308,437
United States of America
Segment Reporting Information [Line Items]
Total net sales	151,404	88,544	313,644	166,639
Singapore
Segment Reporting Information [Line Items]
Total net sales	71,481	62,584	145,217	122,524
Europe
Segment Reporting Information [Line Items]
Total net sales	16,037	5,977	28,873	12,376
Other
Segment Reporting Information [Line Items]
Total net sales	$ 10,051	$ 2,628	$ 19,268	$ 6,898

Earnings per Share - Computatio

Earnings per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Earnings Per Share Basic And Diluted [Line Items]
Net income from continuing operations	$ 28,040	$ 10,470	$ 44,761	$ 23,422
Net loss from discontinued operations		(610)		(722)
Net income	$ 28,040	$ 9,860	$ 44,761	$ 22,700
Weighted average ordinary shares outstanding	25,674,173	24,848,365	25,852,235	24,751,390
Weighted average number of shares used in diluted per share calculation for net income and net income from continuing operations	26,120,717	26,063,527	26,428,207	25,868,403
Net income from continuing operations:
Basic	$ 1.09	$ 0.42	$ 1.73	$ 0.95
Diluted	1.07	0.40	1.69	0.91
Net loss from discontinued operations:
Basic		(0.02)		(0.03)
Diluted		(0.02)		(0.03)
Net income:
Basic	1.09	0.40	1.73	0.92
Diluted	$ 1.07	$ 0.38	$ 1.69	$ 0.88
Continuing Operations
Earnings Per Share Basic And Diluted [Line Items]
Weighted average ordinary shares outstanding	25,674,173	24,848,365	25,852,235	24,751,390
Weighted average number of shares used in diluted per share calculation for net income and net income from continuing operations	26,120,717	26,063,527	26,428,207	25,868,403
Continuing Operations | Employee Stock Option
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	419,867	1,162,889	539,577	1,067,393
Continuing Operations | Restricted Stock
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	23,820	52,273	33,538	49,620
Continuing Operations | 2017 Employee Stock Purchase Plan
Earnings Per Share Basic And Diluted [Line Items]
Dilutive effect of shares	2,857		2,857
Discontinued Operations
Earnings Per Share Basic And Diluted [Line Items]
Weighted average ordinary shares outstanding	25,674,173	24,848,365	25,852,235	24,751,390
Weighted average number of shares used in diluted per share calculation for net income and net income from continuing operations	25,674,173	24,848,365	25,852,235	24,751,390

Earnings per Share - Additional

Earnings per Share - Additional Information (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Potential ordinary shares excluded from computation of diluted net income (loss) per share attributable to ordinary shareholders	435,117	105,471	384,162	192,558

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details)	6 Months Ended
	Jun. 29, 2018
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 of Discontinued Operation (Details) $ in Thousands	Dec. 29, 2017USD ($)
Current assets:
Total current assets	$ 3
Current liabilities:
Total current liabilities	400
Kingston, New York Facility
Current assets:
Prepaid expenses and other current assets	3
Total current assets	3
Total assets	3
Current liabilities:
Accounts payable	136
Accrued liabilities	255
Other current liabilities	9
Total current liabilities	400
Total liabilities	$ 400

Discontinued Operations - Sch56

Discontinued Operations - Schedule of Results of Discontinued Operation (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Operating expenses:
Loss from discontinued operations before income taxes	$ (610)	$ (721)
Income tax expense		1
Net loss from discontinued operations	(610)	(722)
Kingston, New York Facility
Operating expenses:
Selling, general, and administrative	610	721
Total operating expenses	610	721
Operating loss	(610)	(721)
Loss from discontinued operations before income taxes	(610)	(721)
Income tax expense		1
Net loss from discontinued operations	$ (610)	$ (722)

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Jul. 31, 2018	Jun. 29, 2018
Subsequent Event [Line Items]
Shares repurchased during period, shares		1,257,605
Shares repurchased during period, value		$ 29,970
Average price of repurchased ordinary shares		$ 23.83
Subsequent Event
Subsequent Event [Line Items]
Shares repurchased during period, shares	936,092
Shares repurchased during period, value	$ 20,000
Average price of repurchased ordinary shares	$ 21.37