Securities - Realized Gains (Losses) for Equity Securities (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($)
Marketable Securities [Abstract]
Net losses recognized during the period on equity securities	$ (195)
Less: Net (losses) gains recognized during the period on equity securities sold during the period	0
Unrealized losses recognized during the reporting period on equity securities still held at the reporting date	$ (195)

Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

No definition available.

Name:	us-gaap_TradingSecuritiesUnrealizedHoldingGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration