Label	Element	Value
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date Axis: 2021-01-01
Revenue, Remaining Performance Obligation, Amount	us-gaap_RevenueRemainingPerformanceObligation	$ 66,000,000
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date Axis: (nil)
Revenue, Remaining Performance Obligation, Amount	us-gaap_RevenueRemainingPerformanceObligation	144,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	2,572,000
Revenue, Remaining Performance Obligation, Amount	us-gaap_RevenueRemainingPerformanceObligation	32,000,000
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date Axis: 2019-01-01
Revenue, Remaining Performance Obligation, Amount	us-gaap_RevenueRemainingPerformanceObligation	46,000,000
AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(94,135,000)
Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	2,572,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 96,707,000