Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] | NOTE 1 - BASIS OF PRESENTATION Nature of Operations ICF International, Inc. and its subsidiaries (collectively, the “ Company”) provide professional services and technology-based solutions, including management, technology, and policy consulting and implementation services, to government and commercial clients that operate in four The Company ’s major clients are United States (“U.S.”) federal government departments and agencies, most significantly the Department of Health and Human Services (“HHS”), the Department of State (“DOS”), and the Department of Defense (“DoD”). The Company also serves state and local government departments and agencies; international governments; and commercial clients worldwide, such as airlines, airports, electric and gas utilities, oil companies, banks and other financial services companies, transportation, travel and hospitality firms, non-profits/associations, law firms, manufacturing firms, retail chains, and distribution companies. The term “federal” or “federal government” refers to the U.S. federal government, and “state and local” or “state and local government” refers to U.S. state and local governments, unless otherwise indicated. The Company, incorporated in Delaware, is headquartered in Fairfax, Virginia. It maintains offices throughout the world, including over 55 10 Interim Results The unaudited consolidated financial statements included in this Quarterly Report on Form 10 , prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”), to be condensed or omitted. In management’s opinion, the unaudited consolidated financial statements contain all adjustments that are of a normal recurring nature, necessary for a fair presentation of the results of operations and financial position of the Company for the interim periods presented. The Company reports operating results and financial data in one three March 31, 2017 may December 31, 2017. December 31, 2016, 10 February 28, 2017 Significant Accounting Policies Goodwill Impairment Test Date The Company has historically performed its annual goodwill impairment test as of September 30 September 30, 2016, whether it was more likely than not that the Company's reporting unit's fair value was less than its carrying amount. After completing the assessment, the Company determined that it was more likely than not that the estimated fair value of the reporting unit exceeded the carrying amount and that no impairment existed as of the assessment date. If the Company had concluded otherwise, a quantitative goodwill impairment test would have been required, which would include a determination and comparison of the fair value of the reporting unit to its carrying value . Effective for the annual goodwill impairment test for 2017 , the Company will perform the required annual test as of October 1 September 30 fourth October 1, 2017; 2, Summary of Significant Accounting Policies . Reclassifications During the second 2016, 2016 09, Improvements to Employee Share-Based Payment Accounting (Topic 718). 2016 09 $0.2 three March 31, 2016. $0.2 three March 31, 2016. The impact of the adoption on the Company ’s previously reported results for the first 2016 Three Months Ended March 31, 2016 As reported As adjusted Consolidated Statement of Comprehensive Income (unaudited) Provision for income taxes $ 5,837 $ 5,633 Net income $ 9,687 $ 9,891 Comprehensive income, net of tax $ 8,770 $ 8,974 Basic earnings per share $ 0.51 $ 0.52 Diluted earnings per share $ 0.50 $ 0.51 Diluted weighted average shares outstanding 19,293 19,273 Consolidated Statement of Cash Flows (unaudited) Net cash used in operating activities $ (13,581 ) $ (13,377 ) Net cash provided by financing activities $ 18,928 $ 18,724 Recent Accountin g Pronouncements Revenue Recognition In May 2014, Financial Accounting Standards Board (“FASB”) issued ASU 2014 09, 606). 2014 09 August 2015, 2015 14 2014 09 January 1, 2018. 2016 2017 January 1, 2018, January 1, 2018. January 1, 2018, The Company continues to evaluate the impact of adopting ASU 2014 09 The Company has completed a preliminary assessment as of December 2016 June 2017. may may Leases In February 2016, 2016 02, 842). 12 first December 15, 2018, The Company continues to evaluate the impact of adopting ASU 2016 02, Statement of Cash Flows In August 2016, 2016 15 , Statement of Cash Flows (Topic 230): eight 2018, 2016 15. In November 2016, 2016 18, Statement of Cash Flows (Topic 230): 2016 18 December 15, 2017, 2016 18 Goodwill In January 2017, 2017 04, 350), 2 2017 04 two 2 2017 04 December 15, 2019, 2017 04 |