Summary of Significant Accounting Policies New Accounting Pronouncements (Narrative) (Details) - ASU 2016-13 [Member]	9 Months Ended
	Sep. 30, 2019
Minimum [Member] | Net Income [Member]
Item Effected [Line Items]
New Accounting Pronouncement Estimated Impact	30.00%
Minimum [Member] | Loans Receivable [Member]
Item Effected [Line Items]
New Accounting Pronouncement Estimated Impact	30.00%
Minimum [Member] | Allowance for Credit Losses [Member]
Item Effected [Line Items]
New Accounting Pronouncement Estimated Impact	12.00%
Maximum [Member] | Net Income [Member]
Item Effected [Line Items]
New Accounting Pronouncement Estimated Impact	60.00%
Maximum [Member] | Loans Receivable [Member]
Item Effected [Line Items]
New Accounting Pronouncement Estimated Impact	40.00%
Maximum [Member] | Allowance for Credit Losses [Member]
Item Effected [Line Items]
New Accounting Pronouncement Estimated Impact	15.00%