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Short-Term Borrowings | 12 Months Ended
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Dec. 31, 2018
Short-term Debt [Abstract] |
Short-Term Borrowings | Short-Term Borrowings Short-term borrowings were as follows:
December 31 (In thousands) |  | 2018 |  | 2017
Securities sold under agreements to repurchase |  | $ | 164,966 |  |  | $ | 183,289 |
FHLB advances |  | 57,000 |  |  | 208,000 |
Total short-term borrowings |  | $ | 221,966 |  |  | $ | 391,289 |
The outstanding balances for all short-term borrowings as of December 31, 2018 and 2017 and the weighted-average interest rates as of and paid during each of the years then ended were as follows:
(In thousands) |  | Repurchase agreements |  | FHLB Advances
2018 |  |  |  |
Ending balance |  | $ | 164,966 |  |  | $ | 57,000 |
Highest month-end balance |  | 199,729 |  |  | 256,000 |
Average daily balance |  | 172,774 |  |  | 44,553 |
Weighted-average interest rate: |  |  |  |
As of year-end |  | 0.49 | % |  | 2.45 | %
Paid during the year |  | 0.42 | % |  | 1.95 | %
2017 |  |  |  |
Ending balance |  | $ | 183,289 |  |  | $ | 208,000 |
Highest month-end balance |  | 230,905 |  |  | 208,000 |
Average daily balance |  | 205,269 |  |  | 23,924 |
Weighted-average interest rate: |  |  |  |
As of year-end |  | 0.41 | % |  | 1.64 | %
Paid during the year |  | 0.35 | % |  | 1.16 | %
During 2017 and 2018, outstanding FHLB advances were collateralized by investment securities owned by PNB and by various loans pledged under a blanket agreement by PNB. At December 31, 2018 and 2017, $22 million and $25 million, respectively, of investment securities were pledged as collateral for FHLB advances. At December 31, 2018 and 2017, $1,646 million and $1,789 million, respectively, of commercial real estate and residential mortgage loans were pledged under a blanket agreement to the FHLB by PNB. See Note 14 - Repurchase Agreement Borrowings for information related to investment securities collateralizing repurchase agreements.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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