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Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2019
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event: On October 15, 2019, we entered into an agreement with Pacific Life Insurance Company to purchase a group annuity contract and transfer $75.0 million of our pension plan assets and $77.9 million of related benefit obligations. This transaction requires a remeasurement of the pension plan and we expect to recognize a $38.5 million non-cash pension settlement pre-tax loss in the fourth quarter of 2019 for this remeasurement.