Deposits - Schedule of Composition of Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Interest-bearing brokered money market deposits	$ 238,382	$ 285,899
Customer deposits	108,800	70,211
Certificates of deposit with maturities within 1 year	530,889	630,879
Short-term deposits	878,071	986,989
Certificates of deposit with maturities greater than 1 year and less than 5 years	386,770	306,865
Total deposits	$ 1,264,841	$ 1,293,854
Weighted average cost of funds on certificates of deposit outstanding (as a percent)	2.16%	1.51%
Weighted average cost of interest-bearing money market deposits (as a percent)	2.24%	1.49%

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- Definition

The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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- Definition

Amount of interest-bearing domestic money market demand account deposit liabilities.

+ References

+ Details

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- Definition

Amount of domestic noninterest-bearing deposits held by the entity, which may include demand deposits, checking, brokered and retail deposits.

+ References

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- Definition

The weighted average interest rate for domestic certificates of deposit liabilities.

+ References

No definition available.

+ Details

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- Definition

The weighted average interest rate for domestic money market demand account deposit liabilities.

+ References

No definition available.

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- Definition

Certificate of Deposits Maturities, Greater Than One Year And Less Than Five Years

+ References

No definition available.

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- Definition

Certificate of Deposits Maturities, Year One

+ References

No definition available.

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