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Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On October 24, 2017, a wholly owned subsidiary of the Company entered into a definitive purchase agreement to acquire substantially all the assets of Health Integrated, Inc. Based in Tampa, Florida, Health Integrated is a care management company that provides end-to-end technology and analytics-enabled care management services including case management, utilization management, disease management, special needs programs, and multichronic care management on behalf of health plans. Health Integrated currently serves over five million lives in the Medicaid, Medicare, and dual eligible populations. It is known for its strong capabilities in improving member health status through behavioral change. The acquisition is expected to close in the first quarter of 2018, subject to the fulfillment of certain closing conditions, including regulatory and other consents.