Merger Agreement (Narrative) (Details) - Merger Agreement [Member]	Sep. 27, 2020 USD ($) $ / shares
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Date of merger agreement	Sep. 27, 2020
Merger agreement share price \| $ / shares	$ 7.00
Merger agreement parent termination fee \| $	$ 2,100,000

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