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Commercial Loans - Held for Investment by Risk Category (Details) - Commercial loans, held-for-investment - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Commercial Loans [Line Items]
Commercial loans held for investment	$ 0	$ 307,047
Pass
Commercial Loans [Line Items]
Commercial loans held for investment	0	272,768
Watch list
Commercial Loans [Line Items]
Commercial loans held for investment	0	34,279
Workout
Commercial Loans [Line Items]
Commercial loans held for investment	$ 0	$ 0

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- Definition

Commercial Loans [Line Items]

+ References

No definition available.

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- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

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