Repurchase of Equity Securities - Narrative (Details)	Dec. 31, 2018 shares
Rule 10b5-1 Plan
Equity, Class of Treasury Stock [Line Items]
Remaining number of shares authorized to be repurchased	463,013

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration