Fair Value Measurements - Valuation and Inputs, at FV (Details) - Recurring $ in Thousands	Mar. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($) $ / shares item
Fair value inputs, quantitative information
Asset, fair value	$ 505,085	$ 399,176
Liabilities, fair value	16,585	5,250
Level 3 inputs
Fair value inputs, quantitative information
Asset, fair value	115,797	114,660
Loans, held at fair value \| Level 3 inputs \| Third Party Mark
Fair value inputs, quantitative information
Asset, fair value	$ 19,813	$ 20,212
Debt Instrument, Measurement Input [Extensible List]	Third Party Mark	Third Party Mark
Loans, held at fair value \| Level 3 inputs \| Third Party Mark \| Measurement Input, Share Price \| Minimum
Fair value inputs, quantitative information
Debt instrument, measurement input \| item	99.77	100.47
Loans, held at fair value \| Level 3 inputs \| Third Party Mark \| Measurement Input, Share Price \| Maximum
Fair value inputs, quantitative information
Debt instrument, measurement input \| item	105.70	110.83
Loans, held at fair value \| Level 3 inputs \| Third Party Mark \| Measurement Input, Share Price \| Weighted Average
Fair value inputs, quantitative information
Debt instrument, measurement input \| item	101.31	103.31
Mortgage backed securities \| Level 3 inputs \| Third Party Mark
Fair value inputs, quantitative information
Asset, fair value		$ 357
Debt Instrument, Measurement Input [Extensible List]		Third Party Mark
Mortgage backed securities \| Level 3 inputs \| Third Party Mark \| Measurement Input, Share Price \| Minimum
Fair value inputs, quantitative information
Debt instrument, measurement input \| item		1.00
Mortgage backed securities \| Level 3 inputs \| Third Party Mark \| Measurement Input, Share Price \| Maximum
Fair value inputs, quantitative information
Debt instrument, measurement input \| item		1.00
Mortgage backed securities \| Level 3 inputs \| Third Party Mark \| Measurement Input, Share Price \| Weighted Average
Fair value inputs, quantitative information
Debt instrument, measurement input \| $ / shares		1.00
Mortgage backed securities \| Level 3 inputs \| Transaction Price
Fair value inputs, quantitative information
Asset, fair value	$ 103	$ 103
Debt Instrument, Measurement Input [Extensible List]	Transaction Price	Transaction Price
Mortgage backed securities \| Level 3 inputs \| Transaction Price \| Measurement Input, Share Price \| Minimum
Fair value inputs, quantitative information
Debt instrument, measurement input \| item	99.00	99.00
Mortgage backed securities \| Level 3 inputs \| Transaction Price \| Measurement Input, Share Price \| Maximum
Fair value inputs, quantitative information
Debt instrument, measurement input \| item	99.00	99.00
Mortgage backed securities \| Level 3 inputs \| Transaction Price \| Measurement Input, Share Price \| Weighted Average
Fair value inputs, quantitative information
Debt instrument, measurement input	99.00	99.00
Interest-Only-Strips \| Level 3 inputs \| Third Party Mark \| Weighted Average
Fair value inputs, quantitative information
Asset, fair value		$ 400
Mortgage servicing rights \| Level 3 inputs \| Discounted Cash Flow
Fair value inputs, quantitative information
Asset, fair value	$ 78,631	$ 91,174
Debt Instrument, Measurement Input [Extensible List]	Discounted Cash Flow	Discounted Cash Flow

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14210-108612

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+ References

No definition available.

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