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Borrowings - Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Borrowings
Senior Notes	$ 44,058	$ 43,998
Total borrowings	246,615	197,304
Securities sold under repurchase agreements
Borrowings
Total borrowings	29,918	25,715
FHLBC advances
Borrowings
Total borrowings	115,000	70,000
Junior subordinated debentures
Borrowings
Total borrowings	57,639	57,591
Senior Notes.
Borrowings
Total borrowings	$ 44,058	$ 43,998

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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