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SHORT-TERM BORROWINGS AND LONG-TERM DEBT	9 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
SHORT-TERM BORROWINGS AND LONG-TERM DEBT	SHORT-TERM BORROWINGS AND LONG-TERM DEBT The bank is a member of the Federal Home Loan Bank of Des Moines (the “FHLB”) and maintained a $1.39 billion line of credit as of September 30, 2016, of which $1.24 billion was undrawn under this arrangement at September 30, 2016. Short-term borrowings under this arrangement totaled $150.0 million at September 30, 2016, compared to $69.0 million at December 31, 2015.  There were no long-term borrowings under this arrangement at September 30, 2016 and December 31, 2015. FHLB advances outstanding at September 30, 2016 were secured by unencumbered investment securities with a fair value of $0.3 million and certain real estate loans with a carrying value of $1.81 billion in accordance with the collateral provisions of the Advances, Security and Deposit Agreement with the FHLB. At September 30, 2016 and December 31, 2015, our bank had additional unused borrowings available at the Federal Reserve discount window of $68.4 million and $40.8 million, respectively. As of September 30, 2016 and December 31, 2015, certain commercial and commercial real estate loans with a carrying value totaling $129.5 million and $87.3 million, respectively, were pledged as collateral on our line of credit with the Federal Reserve discount window. The Federal Reserve does not have the right to sell or repledge these loans.

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- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20,22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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