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DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	9 Months Ended
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	Sep. 30, 2017
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	NOTE 1—DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS Information Services Group, Inc. (the “Company”, or “ISG”) was founded in 2006 with the strategic vision to become a high-growth, leading provider of information-based advisory services. In 2007, we consummated our initial public offering and completed the acquisition of TPI Advisory Services Americas, Inc. (“TPI”). In December 2016, we consummated our transformational acquisition of Alsbridge Holdings, Inc. (“Alsbridge”).