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Fair Value Measurements (Quantitative information about Level 3 Fair Value Measurements - Recurring) (Details)
$ in Thousands
Sep. 30, 2021
USD ($)
item
Dec. 31, 2020
USD ($)
item
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Assets, Fair Value | $ $ 152,473 $ 90,610
Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Assets, Fair Value | $ 175 425
IRLCs - Asset [Member] | Fair Value, Recurring [Member] | Valuation, Market Approach [Member] | Significant Unobservable Inputs (Level 3) [Member] | Measurement Input, Range Of Pull Through Rate [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Assets, Fair Value | $ $ 175 $ 425
IRLCs - Asset [Member] | Fair Value, Recurring [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Significant Unobservable Inputs (Level 3) [Member] | Measurement Input, Range Of Pull Through Rate [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Assets, Range (Weighted Average) | item 70 70
IRLCs - Asset [Member] | Fair Value, Recurring [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Significant Unobservable Inputs (Level 3) [Member] | Measurement Input, Range Of Pull Through Rate [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Assets, Range (Weighted Average) | item 100 100
IRLCs - Asset [Member] | Fair Value, Recurring [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Significant Unobservable Inputs (Level 3) [Member] | Measurement Input, Range Of Pull Through Rate [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Assets, Range (Weighted Average) | item 85 85