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Subsequent Events (Notes)	6 Months Ended
Subsequent Events (Notes)	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENTS Board Composition. On August 8, 2018, the Company announced that Joseph E. Davis, Fred A. deBoom and James F. Sanders have resigned from the Board, effective immediately. Personnel. On August 8, 2018, the Company announced that Robert B. Stewart Jr., President, Edward J. Treska, Executive Vice President, General Counsel and Clayton J. Haynes, Chief Financial Officer, SVP Finance, Treasurer, are transitioning out of their roles at Acacia effective August 10, 2018, pursuant to a board approved transition arrangement. Mr. Treska and Mr. Haynes have agreed to provide consulting services to the Company to aid in the transition of their duties subsequent to August 10, 2018. Severance payments related to the personnel changes described above total $2.5 million.