Common Stock (Narrative) (Details) - USD ($)	Dec. 31, 2021	Aug. 31, 2019
Common Stock [Abstract]
Amount authorized to be repurchased		$ 2,000,000.0
Remaining amount authorized to be repurchased	$ 341,000

Amount remaining of a stock repurchase plan authorized.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant