Recent Accounting Pronouncements	12 Months Ended
Dec. 29, 2018
Accounting Changes And Error Corrections [Abstract]
Recent Accounting Pronouncements	Note 2. Recent Accounting Pronouncements Recently Adopted Accounting Standards In October 2016, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update which requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The Company adopted this standard in the first quarter of 2018 using a modified retrospective approach. The adoption did not have a material impact on the financial statements. In August 2016, the FASB issued an accounting standard which addresses eight specific cash flow classification issues. This update is effective for public companies for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted, including in an interim period. The standard is to be applied through a retrospective transition method to each period presented. If it is impracticable to apply retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The adoption of this guidance did not have a significant impact on the Company’s consolidated statement of cash flows. In May 2014, the FASB issued an accounting standard update which requires an entity to recognize the amount of revenue to which it expects to be entitled to for transferring promised goods or services to customers. The Company applied Topic 606 using the modified retrospective method by recognizing the cumulative effect of initially applying Topic 606 as an adjustment that increased the opening balance of equity at December 31, 2017 by $0.9 million, which resulted from a decrease of $1.6 million to the opening balance of current deferred revenue, partially offset by a decrease of $0.7 million to the opening balance of inventories – delivered systems. This modified retrospective method was chosen due to the Company’s inability to review all necessary contract information to adopt the standard using the full retrospective method. Both methods are allowed per U.S. GAAP. Therefore, the comparative information has not been adjusted and continues to be reported under Topic 605. Recently Issued Accounting Standards In August 2018, the FASB issued an accounting standard update to provide additional guidance on the accounting for costs of implementation activities performed in a cloud computing arrangement. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. The amendments in this update should be applied retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the effect of this update on its consolidated financial condition and results of operations. In August 2018, the FASB issued an accounting standard update which improves the effectiveness of fair value measurement disclosures in the notes to the financial statements. The update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Certain amendments within the update should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted. Entities are permitted to early adopt any removed or modified disclosures upon issuance of this update and delay adoption of the additional disclosures until their effective date. The adoption of this guidance is not expected to have a significant impact on the Company’s consolidated results of operations or consolidated statement of cash flows. In June 2018, the FASB issued an accounting standard update which simplifies the accounting for nonemployee share-based payment transactions. The accounting for share-based payments to nonemployees and employees will be substantially aligned because of this update. The standard is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. The adoption of this guidance is not expected to have a significant impact on the Company’s consolidated results of operations or consolidated statement of cash flows. In January 2017, the Financial Accounting Standards Board (the "FASB") issued an accounting standard update which simplifies the subsequent measurement of goodwill and removes step 2 from the goodwill impairment test. Instead, an entity should record an impairment charge based on excess of a reporting unit’s carrying amount over its fair value. The standard is effective for public companies for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial condition and results of operations. In June 2016, the FASB issued an accounting standard which requires measurement and timely recognition of expected credit losses for financial assets. The update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The standard is to be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The Company is currently evaluating the effect of this update on its consolidated financial condition and results of operations. In February 2016, the FASB issued an accounting standard update which requires lessees to record a right-of-use asset and a corresponding lease liability on the balance sheet (with the exception of short-term leases). For lessees, leases will continue to be classified as either operating or financing in the income statement. The standard is effective for public companies for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company generally does not finance purchases of equipment or other capital assets but does lease some equipment and facilities. The Company established a cross-functional implementation team to evaluate and identify the impact of this update on its financial position, results of operations and cash flows. The Company has determined that it will elect all practical expedients permitted within the new standard which will allow it to not reassess whether any expired or existing contracts are or contain leases, not reassess the lease classification for any expired or existing lease, apply hindsight in determining the lease term, chose to treat separate lease components and nonlease components associated with the lease component as a single lease component, and to not reassess the initial direct costs for any existing lease. Also, the Company expects to make an accounting policy election to not recognize a lease liability or right-to-use asset for leases with a term of twelve months or less and recognize such lease payments in its Consolidated Statement of Operations as incurred. Additionally, the Company has determined that it will adopt the optional transition practical expedient thus allowing it to initially apply the new standard at the adoption date, which for the Company will be December 30, 2018. The Company anticipates recording lease liabilities and assets between $10.5 million and $12.5 million on its Consolidated Balance Sheet with no material impact to its Consolidated Statements of Operations. The Company does not anticipate any material impact to its cash flow, although the new standard does require that lease payments now be reported as a financing activity on its Consolidated Statement of Cash Flows instead of as an operating activity.

Recent Accounting Pronouncements

12 Months Ended

Dec. 29, 2018

Accounting Changes And Error Corrections [Abstract]

Note 2. Recent Accounting Pronouncements

Recently Adopted Accounting Standards

In October 2016, the Financial Accounting Standards Board (“FASB”) issued an accounting standard update which requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. The Company adopted this standard in the first quarter of 2018 using a modified retrospective approach. The adoption did not have a material impact on the financial statements.

In August 2016, the FASB issued an accounting standard which addresses eight specific cash flow classification issues. This update is effective for public companies for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. Early adoption is permitted, including in an interim period. The standard is to be applied through a retrospective transition method to each period presented. If it is impracticable to apply retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The adoption of this guidance did not have a significant impact on the Company’s consolidated statement of cash flows.

In May 2014, the FASB issued an accounting standard update which requires an entity to recognize the amount of revenue to which it expects to be entitled to for transferring promised goods or services to customers. The Company applied Topic 606 using the modified retrospective method by recognizing the cumulative effect of initially applying Topic 606 as an adjustment that increased the opening balance of equity at December 31, 2017 by $0.9 million, which resulted from a decrease of $1.6 million to the opening balance of current deferred revenue, partially offset by a decrease of $0.7 million to the opening balance of inventories – delivered systems. This modified retrospective method was chosen due to the Company’s inability to review all necessary contract information to adopt the standard using the full retrospective method. Both methods are allowed per U.S. GAAP. Therefore, the comparative information has not been adjusted and continues to be reported under Topic 605.

Recently Issued Accounting Standards

In August 2018, the FASB issued an accounting standard update to provide additional guidance on the accounting for costs of implementation activities performed in a cloud computing arrangement. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software and hosting arrangements that include an internal-use software license. The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. The amendments in this update should be applied retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company is currently evaluating the effect of this update on its consolidated financial condition and results of operations.

In August 2018, the FASB issued an accounting standard update which improves the effectiveness of fair value measurement disclosures in the notes to the financial statements. The update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Certain amendments within the update should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted. Entities are permitted to early adopt any removed or modified disclosures upon issuance of this update and delay adoption of the additional disclosures until their effective date. The adoption of this guidance is not expected to have a significant impact on the Company’s consolidated results of operations or consolidated statement of cash flows.

In June 2018, the FASB issued an accounting standard update which simplifies the accounting for nonemployee share-based payment transactions. The accounting for share-based payments to nonemployees and employees will be substantially aligned because of this update. The standard is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. Early adoption is permitted, but no earlier than an entity’s adoption date of Topic 606. The adoption of this guidance is not expected to have a significant impact on the Company’s consolidated results of operations or consolidated statement of cash flows.

In January 2017, the Financial Accounting Standards Board (the "FASB") issued an accounting standard update which simplifies the subsequent measurement of goodwill and removes step 2 from the goodwill impairment test. Instead, an entity should record an impairment charge based on excess of a reporting unit’s carrying amount over its fair value. The standard is effective for public companies for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The adoption of this guidance is not expected to have a significant impact on the Company’s consolidated financial condition and results of operations.

In June 2016, the FASB issued an accounting standard which requires measurement and timely recognition of expected credit losses for financial assets. The update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The standard is to be applied through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. The Company is currently evaluating the effect of this update on its consolidated financial condition and results of operations.

In February 2016, the FASB issued an accounting standard update which requires lessees to record a right-of-use asset and a corresponding lease liability on the balance sheet (with the exception of short-term leases). For lessees, leases will continue to be classified as either operating or financing in the income statement. The standard is effective for public companies for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company generally does not finance purchases of equipment or other capital assets but does lease some equipment and facilities. The Company established a cross-functional implementation team to evaluate and identify the impact of this update on its financial position, results of operations and cash flows. The Company has determined that it will elect all practical expedients permitted within the new standard which will allow it to not reassess whether any expired or existing contracts are or contain leases, not reassess the lease classification for any expired or existing lease, apply hindsight in determining the lease term, chose to treat separate lease components and nonlease components associated with the lease component as a single lease component, and to not reassess the initial direct costs for any existing lease. Also, the Company expects to make an accounting policy election to not recognize a lease liability or right-to-use asset for leases with a term of twelve months or less and recognize such lease payments in its Consolidated Statement of Operations as incurred. Additionally, the Company has determined that it will adopt the optional transition practical expedient thus allowing it to initially apply the new standard at the adoption date, which for the Company will be December 30, 2018. The Company anticipates recording lease liabilities and assets between $10.5 million and $12.5 million on its Consolidated Balance Sheet with no material impact to its Consolidated Statements of Operations. The Company does not anticipate any material impact to its cash flow, although the new standard does require that lease payments now be reported as a financing activity on its Consolidated Statement of Cash Flows instead of as an operating activity.