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.

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

Regulatory & Capital Matters - Dividend Restrictions and Deferrals (Details) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Sep. 30, 2019
Dividend Restrictions and Deferrals
Number of previous years retained profit considered for dividend payment				2 years
Minimum capital requirements, minimum percentage required				2.50%
Number of shares authorized					1,494,826
Number of share repurchased	137,756	145,932	312,723