XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.19.1

Summary of Significant Accounting Policies - Basis of Presentation (Details) - USD ($) $ in Thousands | Jan. 01, 2019 | Dec. 31, 2017
--- | --- | ---
Summary of Significant Accounting Policies |  |
Cumulative effect of applying new accounting standards | $ 0 | $ 8,645

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption. + References No definition available. + Details
Name: | us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant