Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands |
6 Months Ended | |||
---|---|---|---|---|
Jul. 01, 2019 |
Dec. 31, 2019 |
Jun. 30, 2019 |
Sep. 30, 2018 |
|
Summary Of Significant Accounting Policies [Line Items] | ||||
ROU assets | $ 96,745 | |||
Lease liabilities | $ 99,496 | |||
Cumulative effect of change in accounting standards | $ (188,799) | |||
Estimated discount rate | 3.50% | |||
ASU 2016-02 [Member] | ||||
Summary Of Significant Accounting Policies [Line Items] | ||||
ROU assets | $ 77,600 | |||
Lease liabilities | 81,300 | |||
Derecognized deferred rent | 3,700 | |||
Cumulative effect of change in accounting standards | 77,600 | |||
Minimum [Member] | ||||
Summary Of Significant Accounting Policies [Line Items] | ||||
Deferred revenue recognized over a period of | 1 year | |||
Additional ROU assets and lease liabilities due to guidance | 60,000 | |||
Maximum [Member] | ||||
Summary Of Significant Accounting Policies [Line Items] | ||||
Deferred revenue recognized over a period of | 5 years | |||
Additional ROU assets and lease liabilities due to guidance | $ 70,000 |