Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (38,392,000)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (38,392,000)

[1] Cumulative effect adjustments are primarily related to the implementation of new revenue recognition guidance effective January 1, 2018. See Note 2, "Significant Accounting Policies".