Income Taxes	3 Months Ended
Apr. 01, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended April 1, 2018 and April 2, 2017, the Company recorded a net income tax expense of $61,000 and $36,000, respectively. The income tax expense for the first quarters of 2018 and 2017 relates to income taxes from the Company's foreign operations, which are cost-plus entities. Based on the available objective evidence, management believes it is more likely than not that the Company's US domestic net deferred tax assets will not be fully realizable. Accordingly, the Company has provided a full valuation allowance against the associated deferred tax assets. The Company will continue to assess the realizability of the deferred tax assets in future periods. The Company had no unrecognized tax benefits as of April 1, 2018 and December 31, 2017, which would affect the Company's effective tax rate. The accrued interest and penalties related to uncertain tax positions was not significant as of April 1, 2018 and December 31, 2017. The Company does not anticipate any material changes to its unrecognized tax benefits during the next 12 months. The Company is subject to U.S. federal income tax as well as income taxes in many U.S. states and foreign jurisdictions in which the Company operates. The U.S. tax years from 1998 forward remain effectively open to examination due to the carryover of unused net operating losses and tax credits. On December 22, 2017, the Tax Cuts and Jobs Act (the "Tax Act") was signed into legislation. The Tax Act introduced a broad range of tax reform measures that significantly change the federal income tax laws. The provisions of the Tax Act that may have significant impact on the Company include the permanent reduction of the corporate income tax rate from 35% to 21% (effective for tax years including or commencing on January 1, 2018), one-time transition tax on post-1986 foreign unremitted earnings, provision for Global Intangible Low-Taxed Income or GILTI, deduction for Foreign-Derived Intangible Income or FDII, repeal of corporate alternative minimum tax, limitation of various business deductions, modification of the maximum deduction of net operating loss with no carryback but indefinite carryforward provision and the limitation on the deductibility of executive compensation. Many provisions in the Tax Act are generally effective in tax years beginning in 2018. At December 31, 2017, the Company reflected the provisional income tax effects of the Tax Act under Accounting Standards Codification Topic 740, Income Taxes including a re-measurement of the deferred tax assets based on the revised rates at which they are expected to reverse. There was no tax effect related to the re-measurement of U.S. deferred taxes using the relevant tax rate at which the Company expects them to reverse due to the Company having recorded a full valuation allowance against its U.S. federal and state deferred tax assets. The estimated one-time transition tax on post-1986 foreign unremitted earnings should not have a material impact to the effective tax rate as the deemed distribution is offset by taxable losses. The Company continues to appropriately refine such amounts within the measurement period allowed by Staff Accounting Bulletin or SAB No.118, which will be completed no later than the fourth quarter of 2018. For the three months ended April 1, 2018, the Company noted no additional guidance or information that affects the provisional amounts recorded for the year ended December 31, 2017. The Company will continue to monitor and analyze any additional guidance and information that may be issued by the federal and state tax authorities. In January 2018, the FASB released guidance on the accounting for tax on the global intangible low-taxed income (“GILTI”) provisions of the Tax Act. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The Company is not projecting any material impact from GILTI inclusions.

Income Taxes

For the three months ended April 1, 2018 and April 2, 2017, the Company recorded a net income tax expense of $61,000 and $36,000, respectively. The income tax expense for the first quarters of 2018 and 2017 relates to income taxes from the Company's foreign operations, which are cost-plus entities.

Based on the available objective evidence, management believes it is more likely than not that the Company's US domestic net deferred tax assets will not be fully realizable. Accordingly, the Company has provided a full valuation allowance against the associated deferred tax assets. The Company will continue to assess the realizability of the deferred tax assets in future periods.

The Company had no unrecognized tax benefits as of April 1, 2018 and December 31, 2017, which would affect the Company's effective tax rate. The accrued interest and penalties related to uncertain tax positions was not significant as of April 1, 2018 and December 31, 2017.

The Company does not anticipate any material changes to its unrecognized tax benefits during the next 12 months.

The Company is subject to U.S. federal income tax as well as income taxes in many U.S. states and foreign jurisdictions in which the Company operates. The U.S. tax years from 1998 forward remain effectively open to examination due to the carryover of unused net operating losses and tax credits.

On December 22, 2017, the Tax Cuts and Jobs Act (the "Tax Act") was signed into legislation. The Tax Act introduced a broad range of tax reform measures that significantly change the federal income tax laws. The provisions of the Tax Act that may have significant impact on the Company include the permanent reduction of the corporate income tax rate from 35% to 21% (effective for tax years including or commencing on January 1, 2018), one-time transition tax on post-1986 foreign unremitted earnings, provision for Global Intangible Low-Taxed Income or GILTI, deduction for Foreign-Derived Intangible Income or FDII, repeal of corporate alternative minimum tax, limitation of various business deductions, modification of the maximum deduction of net operating loss with no carryback but indefinite carryforward provision and the limitation on the deductibility of executive compensation. Many provisions in the Tax Act are generally effective in tax years beginning in 2018.

At December 31, 2017, the Company reflected the provisional income tax effects of the Tax Act under Accounting Standards Codification Topic 740, Income Taxes including a re-measurement of the deferred tax assets based on the revised rates at which they are expected to reverse. There was no tax effect related to the re-measurement of U.S. deferred taxes using the relevant tax rate at which the Company expects them to reverse due to the Company having recorded a full valuation allowance against its U.S. federal and state deferred tax assets. The estimated one-time transition tax on post-1986 foreign unremitted earnings should not have a material impact to the effective tax rate as the deemed distribution is offset by taxable losses. The Company continues to appropriately refine such amounts within the measurement period allowed by Staff Accounting Bulletin or SAB No.118, which will be completed no later than the fourth quarter of 2018.

For the three months ended April 1, 2018, the Company noted no additional guidance or information that affects the provisional amounts recorded for the year ended December 31, 2017. The Company will continue to monitor and analyze any additional guidance and information that may be issued by the federal and state tax authorities.

In January 2018, the FASB released guidance on the accounting for tax on the global intangible low-taxed income (“GILTI”) provisions of the Tax Act. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The Company is not projecting any material impact from GILTI inclusions.