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Subsequent Events (Notes)	9 Months Ended
Subsequent Events (Notes)	Sep. 30, 2017
Subsequent Event [Line Items]
Subsequent Events [Text Block]	Subsequent Event On October 2, 2017, we paid our $33.1 million five-year term loan due January 2018 and terminated the associated interest-rate swap agreement. There was no material gain or loss on the extinguishment of this loan.