Collateralized Receivables and Transfers of Financial Assets Collateralized Receivables and Transfers of Financial Assets, Allowance for Collateralized Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for Loan and Lease Losses	$ 587	$ 0
Collateralized Receivables [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	(807)	(936)
Allowance for Loan and Lease Losses, Write-offs	140	660
Provision for Loan and Lease Losses	80	(531)
Total activity	807	129
Ending balance	$ 0	$ (807)