Long-Term Borrowings - Future Contractual Principal Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Future contractual principal payments and maturities on long term borrowings
2020	$ 9
2021	10
2023	100,000
2024	100,000
Total	$ 200,019	$ 600,026
Finance lease
Future contractual principal payments and maturities on long term borrowings
Interest rate (as a percent)	6.78%	6.78%
Short-term FHLB fixed-rate advance:
Future contractual principal payments and maturities on long term borrowings
Total	$ 200,000	$ 600,000
Interest rate (as a percent)	2.73%
Short-term FHLB fixed-rate advance: \| December 4, 2020
Future contractual principal payments and maturities on long term borrowings
Interest rate (as a percent)	2.80%
Short-term FHLB fixed-rate advance: \| January 15, 2021
Future contractual principal payments and maturities on long term borrowings
Interest rate (as a percent)	2.65%

Contractual interest rate for funds borrowed, under the debt agreement.

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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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