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Subsequent Event	3 Months Ended
Subsequent Event	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On July 24, 2018, the U.S. Court of Appeals for the Ninth Circuit reversed the decision of the U.S. Tax Court in Altera Corp. v. Commissioner related to the treatment of stock based compensation in an intercompany cost sharing arrangement. We are currently evaluating the impact of this decision. The effect this decision may have on our financial statements, if any, could be material.