Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Regulatory Matters (Narrative) (Details) - shares	3 Months Ended
Regulatory Matters (Narrative) (Details) - shares	Dec. 31, 2020	Dec. 11, 2020	Mar. 02, 2020
Repurchase Program, March 2020 [Member]
Regulatory Matters [Line Items]
Stock repurchase program, shares authorized			500,000
Repurchase Program, December 2020 [Member]
Regulatory Matters [Line Items]
Stock repurchase program, shares authorized		500,000
Shares of common stock repurchased	0