Business Overview and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Business Overview and Summary of Significant Accounting Policies
Basis of Presentation	Basis of Presentation Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, these financial statements reflect all adjustments (consisting of normal recurring adjustments) considered necessary for the fair statement of the results of the interim periods presented. The Condensed Consolidated Balance Sheet as of December 31, 2019 is derived from the audited financial statements as of that date. The accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.
Use of Estimates	Use of Estimates Management uses estimates and assumptions relating to the reporting of assets and liabilities in its preparation of the condensed consolidated financial statements. Significant items subject to such estimates and assumptions include the carrying amount of property and equipment, goodwill and intangible assets, leases, valuation allowances for inventories and deferred taxes, revenue recognized for work performed but not completed, and uncertain tax positions. Actual results could differ from those estimates.
Recent Accounting Standards	Recent Accounting Standards Recently Adopted Accounting Standards In February 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Codification (“ASC”) Topic 842, Leases (“ASC 842”), which provides guidance for accounting for leases. The new guidance requires companies to recognize the assets and liabilities for the rights and obligations created by leased assets. ASC 842 is effective for annual and interim periods beginning after December 15, 2018 (the Company’s fiscal year 2019) with early adoption permitted. The guidance required a modified retrospective approach, with an option to apply the transition provisions of the new guidance at the adoption date without adjusting the comparative periods presented. In July 2018, the FASB issued additional accounting standard updates clarifying certain provisions, as well as providing for a second transition method allowing entities to initially apply the standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings. The Company adopted the new guidance on January 1, 2019 and used the adoption date as the date of initial application as allowed under ASC 842. Refer to Note 10, Financing and Operating Leases. Recently Issued Accounting Standards In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"). This ASU changes the model for the recognition of credit losses from an incurred loss model, which recognized credit losses only if it was probable that a loss had been incurred, to an expected loss model, which requires the Company to estimate the total credit losses expected on the portfolio of financial instruments. The effective date of ASU 2016-13 was amended by ASU 2019-10, Credit Losses Effective Dates. CPI is a smaller reporting company and adoption of this accounting standard is effective for the Company for fiscal years beginning after December 15, 2022, and interim periods therein, with early adoption permitted. The Company has elected not to early adopt this accounting standard in the current fiscal year 2020. The Company is evaluating the impact of adoption of this standard, and does not anticipate the application of ASU 2016-13 will have a material impact on the Company’s consolidated financial position and results of operations.