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Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event In April 2019, we finalized a settlement agreement with the DOJ and the OIG and entered into a corporate integrity agreement requiring us to maintain our ongoing corporate compliance program and obligating us to implement or continue, as applicable, a set of defined corporate integrity activities for a period of five years from the effective date of the corporate integrity agreement. For more information, see Note 11, Commitments and Contingencies—Other Contingencies.