XML 61 R49.htm IDEA: XBRL DOCUMENT
v3.19.2

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Fair Value Disclosures [Abstract] |  |
Derivative credit risk valuation adjustment, derivative assets | $ 0.1 | $ 0.2

X
- Definition Amount of credit risk valuation adjustment to derivative assets to properly reflect the credit quality of the counterparties. + References No definition available. + Details
Name: | us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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