Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Summary Of Major Accounting Policies Allowance for credit losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jan. 01, 2020	Jan. 01, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets		$ (2,273)	$ (5,860)
Accounts Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	$ (5,300)
Financing Receivable, Allowance for Credit Loss	4,100
Financing Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	$ 500
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets		$ 2,273