Nature of Operations and Basis of Presentation (Policies)	9 Months Ended
Sep. 27, 2021
Accounting Policies [Abstract]
Reclassifications	Reclassifications The Company currently has two reportable segments: PCB and RF and Specialty Components (RF&S Components). On April 29, 2020, the Company announced the restructuring of its E-M Solutions business unit. In prior periods, the Company’s E-M Solutions business unit consisted of three Chinese manufacturing facilities with two being in Shanghai (SH BPA and SH E-MS) and one in Shenzhen (SZ). The Company closed the SH E-MS and SZ facilities at the end of 2020 and integrated the SH BPA facility into its PCB operations. As of March 29, 2021, E-M Solutions no longer met the criteria for segment reporting. As a result of the restructuring of the E-M Solutions business unit, certain prior year amounts have been reclassified to conform to this new presentation.
Recently Adopted and Issued Accounting Standards	Recently Adopted and Issued Accounting Standards Recently Adopted Accounting Standards In December 2019, the Financial Accounting Standards Board (FASB) issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU as of December 29, 2020 and it did not have a material impact on its consolidated condensed financial statements and related disclosures.

Nature of Operations and Basis of Presentation (Policies)

9 Months Ended

Sep. 27, 2021

The Company currently has two reportable segments: PCB and RF and Specialty Components (RF&S Components). On April 29, 2020, the Company announced the restructuring of its E-M Solutions business unit. In prior periods, the Company’s E-M Solutions business unit consisted of three Chinese manufacturing facilities with two being in Shanghai (SH BPA and SH E-MS) and one in Shenzhen (SZ). The Company closed the SH E-MS and SZ facilities at the end of 2020 and integrated the SH BPA facility into its PCB operations. As of March 29, 2021, E-M Solutions no longer met the criteria for segment reporting. As a result of the restructuring of the E-M Solutions business unit, certain prior year amounts have been reclassified to conform to this new presentation.

Recently Adopted and Issued Accounting Standards

Recently Adopted Accounting Standards

In December 2019, the Financial Accounting Standards Board (FASB) issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which is intended to simplify various aspects related to accounting for income taxes. ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The guidance is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU as of December 29, 2020 and it did not have a material impact on its consolidated condensed financial statements and related disclosures.