The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Fair value at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of cash flows expected to be collected at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

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Amount of contractually required payments receivable at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

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The amount of the loan's contractually required payments receivable in excess of the amount of its cash flows expected to be collected. This relates to loans with deteriorating of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Purchased Loans - Fair Value of Loans Purchased (Details) - Purchased loans - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Sep. 01, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Accretable yield	$ (30,470)	$ (34,265)
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Contractually-required principal and interest	297,164
Nonaccretable difference	(57,848)
Cash flows expected to be collected	239,316
Accretable yield	(30,470)
Fair value	$ 208,846
Brand \| Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Contractually-required principal and interest			$ 1,625,079
Nonaccretable difference			(123,399)
Cash flows expected to be collected			1,501,680
Accretable yield			(170,651)
Fair value			$ 1,331,029