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Fair Values (Tables) | 12 Months Ended
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Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Schedule of financial assets and liabilities measured on a recurring basis | The following table presents assets and liabilities measured at fair value on a recurring basis:
Fair Value Measurements at December 31, 2016 using:
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Balance at December 31, 2016
Assets |  |  |  |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | — |  |  | $ | 267,533 |  |  | $ | — |  |  | $ | 267,533 |
U.S. Government sponsored entities’ asset-backed securities |  | — |  |  | 987,172 |  |  | — |  |  | 987,172 |
Equity securities |  | 2,644 |  |  | — |  |  | 790 |  |  | 3,434 |
Mortgage loans held for sale |  | — |  |  | 10,413 |  |  | — |  |  | 10,413 |
Mortgage IRLCs |  | — |  |  | 124 |  |  | — |  |  | 124 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Fair value swap |  | $ | — |  |  | $ | — |  |  | $ | 226 |  |  | $ | 226 |
Fair Value Measurements at December 31, 2015 using:
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Balance at December 31, 2015
Assets |  |  |  |  |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | — |  |  | $ | 522,063 |  |  | $ | — |  |  | $ | 522,063 |
U.S. Government sponsored entities’ asset-backed securities |  | — |  |  | 911,493 |  |  | — |  |  | 911,493 |
Equity securities |  | 1,941 |  |  | — |  |  | 769 |  |  | 2,710 |
Mortgage loans held for sale |  | — |  |  | 7,306 |  |  | — |  |  | 7,306 |
Mortgage IRLCs |  | — |  |  | 165 |  |  | — |  |  | 165 |
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Fair value swap |  | $ | — |  |  | $ | — |  |  | $ | 226 |  |  | $ | 226 |
Schedule of reconciliation of level 3 input for financial instruments measured on recurring basis | The table below is a reconciliation of the beginning and ending balances of the Level 3 inputs for the years ended December 31, 2016 and 2015, for financial instruments measured on a recurring basis and classified as Level 3:
Level 3 Fair Value Measurements
(In thousands) |  | Equity Securities |  | Fair Value Swap
Balance at January 1, 2016 |  | $ | 769 |  |  | $ | (226 | )
Total Gains (Losses) |  |  |  |
Included in earnings - realized |  | — |  |  | — |
Included in earnings - unrealized |  | — |  |  | — |
Included in other comprehensive income |  | 21 |  |  | — |
Purchases, sales, issuances and settlements, other, net |  | — |  |  | — |
Re-evaluation of fair value swap |  | — |  |  | — |
Balance at December 31, 2016 |  | $ | 790 |  |  | $ | (226 | )
Balance at January 1, 2015 |  | $ | 776 |  |  | $ | (226 | )
Total Gains (Losses) |  |  |  |
Included in earnings - realized |  | — |  |  | — |
Included in earnings - unrealized |  | — |  |  | — |
Included in other comprehensive income |  | (7 | ) |  | — |
Purchases, sales, issuances and settlements, other, net |  | — |  |  | — |
Re-evaluation of fair value swap |  | — |  |  | — |
Balance at December 31, 2015 |  | $ | 769 |  |  | $ | (226 | )
Schedule of assets and liabilities measured at fair value on a nonrecurring basis |
Fair Value Measurements at December 31, 2016 Using:
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Balance at December 31, 2016
Impaired Loans: |  |  |  |  |  |  |  |
Commercial real estate |  | $ | — |  |  | $ | — |  |  | $ | 3,057 |  |  | $ | 3,057 |
Construction real estate |  | — |  |  | — |  |  | 541 |  |  | 541 |
Residential real estate |  | — |  |  | — |  |  | 2,385 |  |  | 2,385 |
Total impaired loans |  | $ | — |  |  | $ | — |  |  | $ | 5,983 |  |  | $ | 5,983 |
Mortgage Servicing Rights |  | $ | — |  |  | $ | 6,769 |  |  | $ | — |  |  | $ | 6,769 |
Other Real Estate Owned: |  |  |  |  |  |  |  |
Commercial real estate |  | — |  |  | — |  |  | 2,644 |  |  | 2,644 |
Construction real estate |  | — |  |  | — |  |  | 3,322 |  |  | 3,322 |
Residential real estate |  | — |  |  | — |  |  | 931 |  |  | 931 |
Total Other Real Estate Owned |  | $ | — |  |  | $ | — |  |  | $ | 6,897 |  |  | $ | 6,897 |
Fair Value Measurements at December 31, 2015 Using:
(In thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Balance at December 31, 2015
Impaired Loans: |  |  |  |  |  |  |  |
Commercial real estate |  | $ | — |  |  | $ | — |  |  | $ | 3,698 |  |  | $ | 3,698 |
Construction real estate: |  |  |  |  |  |  |  |
SEPH commercial land and development |  | — |  |  | — |  |  | 2,044 |  |  | 2,044 |
Remaining commercial |  | — |  |  | — |  |  | 1,872 |  |  | 1,872 |
Residential real estate |  | — |  |  | — |  |  | 1,882 |  |  | 1,882 |
Total impaired loans |  | $ | — |  |  | $ | — |  |  | $ | 9,496 |  |  | $ | 9,496 |
Mortgage Servicing Rights |  | $ | — |  |  | $ | 1,867 |  |  | $ | — |  |  | $ | 1,867 |
Other Real Estate Owned: |  |  |  |  |  |  |  |
Commercial real estate |  | — |  |  | — |  |  | 2,796 |  |  | 2,796 |
Construction real estate |  | — |  |  | — |  |  | 3,387 |  |  | 3,387 |
Residential real estate |  | — |  |  | — |  |  | 2,332 |  |  | 2,332 |
Total Other Real Estate Owned |  | $ | — |  |  | $ | — |  |  | $ | 8,515 |  |  | $ | 8,515 |
Schedule of qualitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis | The following tables present quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2016 and December 31, 2015:
December 31, 2016
(In thousands) |  | Fair Value |  | Valuation Technique |  | Unobservable Input(s) |  | Range (Weighted Average)
Impaired loans: |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 3,057 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 90.0% (20.2%)
|  |  |  | Income approach |  | Capitalization rate |  | 9.0% - 10.6% (10.1%)
|  |  |  | Cost approach |  | Accumulated depreciation |  | 17.0% - 18.0% (17.8%)
Construction real estate |  | $ | 541 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 11.1% (1.6%)
|  |  |  | Bulk sale approach |  | Discount rate |  | 10.0% (10.0%)
Residential real estate |  | $ | 2,385 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.3% - 110.0% (17.0%)
|  |  |  | Income approach |  | Capitalization rate |  | 10.0% (10.0%)
Other real estate owned: |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 2,644 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 68.4% (26.5%)
|  |  |  | Income approach |  | Capitalization rate |  | 13.0% - 14.0% (13.1%)
Construction real estate |  | $ | 3,322 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 90.0% (24.7%)
|  |  |  | Bulk sale approach |  | Discount rate |  | 15.0% (15.0%)
Residential real estate |  | $ | 931 |  |  | Sales comparison approach |  | Adj to comparables |  | 3.2% - 79.7% (30.6%)
December 31, 2015
(In thousands) |  | Fair Value |  | Valuation Technique |  | Unobservable Input(s) |  | Range (Weighted Average)
Impaired loans: |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 3,698 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 45.9% (20.3%)
|  |  |  | Income approach |  | Capitalization rate |  | 7.0% - 13.3% (9.5%)
|  |  |  | Cost approach |  | Accumulated depreciation |  | 50.0% (50.0%)
Construction real estate: |  |  |  |  |  |  |  |  |
SEPH commercial land and development |  | $ | 2,044 |  |  | Sales comparison approach |  | Adj to comparables |  | 5.0% - 40.0% (22.1%)
|  |  |  | Bulk sale approach |  | Discount rate |  | 10.7% (10.7%)
Remaining commercial |  | $ | 1,872 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 25.3% (1.0%)
|  |  |  | Bulk sale approach |  | Discount rate |  | 10.0% - 10.7% (10.0%)
Residential real estate |  | $ | 1,882 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 96.7% (12.5%)
|  |  |  | Income approach |  | Capitalization rate |  | 3.8% - 10.1% (9.1%)
|  |  |  | Cost approach |  | Accumulated depreciation |  | 33.3% - 50.0% (43.4%)
Other real estate owned: |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 2,796 |  |  | Sales comparison approach |  | Adj to comparables |  | 2.0% - 71.0% (26.9%)
|  |  |  | Income approach |  | Capitalization rate |  | 9.5% (9.5%)
Construction real estate |  | $ | 3,387 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.0% - 85.0% (24.3%)
|  |  |  | Bulk sale approach |  | Discount rate |  | 15.0% (15.0%)
Residential real estate |  | $ | 2,332 |  |  | Sales comparison approach |  | Adj to comparables |  | 0.1% - 61.8% (23.0%)
Fair value, by balance sheet grouping | The fair value of financial instruments at December 31, 2016 and December 31, 2015, was as follows:
|  | December 31, 2016
|  |  |  | Fair Value Measurements
(In thousands) |  | Carrying value |  | Level 1 |  | Level 2 |  | Level 3 |  | Total fair value
Financial assets: |  |  |  |  |  |  |  |  |  |
Cash and money market instruments |  | $ | 146,466 |  |  | $ | 146,466 |  |  | $ | — |  |  | $ | — |  |  | $ | 146,466 |
Investment securities |  | 1,517,972 |  |  | 2,644 |  |  | 1,511,377 |  |  | 790 |  |  | 1,514,811 |
Accrued interest receivable - securities |  | 3,849 |  |  | — |  |  | 3,849 |  |  | — |  |  | 3,849 |
Accrued interest receivable - loans |  | 14,973 |  |  | — |  |  | — |  |  | 14,973 |  |  | 14,973 |
Mortgage loans held for sale |  | 10,413 |  |  | — |  |  | 10,413 |  |  | — |  |  | 10,413 |
Impaired loans carried at fair value |  | 5,983 |  |  | — |  |  | — |  |  | 5,983 |  |  | 5,983 |
Mortgage IRLCs |  | 124 |  |  | — |  |  | 124 |  |  | — |  |  | 124 |
Other loans |  | 5,204,713 |  |  | — |  |  | — |  |  | 5,161,919 |  |  | 5,161,919 |
Loans receivable, net |  | $ | 5,221,233 |  |  | $ | — |  |  | $ | 10,537 |  |  | $ | 5,167,902 |  |  | $ | 5,178,439 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-interest bearing checking accounts |  | $ | 1,523,417 |  |  | $ | 1,523,417 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,523,417 |
Interest bearing transaction accounts |  | 1,174,448 |  |  | 1,174,448 |  |  | — |  |  | — |  |  | 1,174,448 |
Savings accounts |  | 1,704,920 |  |  | 1,704,920 |  |  | — |  |  | — |  |  | 1,704,920 |
Time deposits |  | 1,117,870 |  |  | — |  |  | 1,122,598 |  |  | — |  |  | 1,122,598 |
Other |  | 1,301 |  |  | 1,301 |  |  | — |  |  | — |  |  | 1,301 |
Total deposits |  | $ | 5,521,956 |  |  | $ | 4,404,086 |  |  | $ | 1,122,598 |  |  | $ | — |  |  | $ | 5,526,684 |
Short-term borrowings |  | $ | 394,795 |  |  | $ | — |  |  | $ | 394,795 |  |  | $ | — |  |  | $ | 394,795 |
Long-term debt |  | 694,281 |  |  | — |  |  | 712,958 |  |  | — |  |  | 712,958 |
Subordinated notes |  | 45,000 |  |  | — |  |  | 40,903 |  |  | — |  |  | 40,903 |
Accrued interest payable – deposits |  | 900 |  |  | 82 |  |  | 818 |  |  | — |  |  | 900 |
Accrued interest payable – debt/borrowings |  | 1,251 |  |  | 1 |  |  | 1,250 |  |  | — |  |  | 1,251 |
Derivative financial instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value swap |  | $ | 226 |  |  | $ | — |  |  | $ | — |  |  | $ | 226 |  |  | $ | 226 |
|  | December 31, 2015
|  |  |  | Fair Value Measurements
(In thousands) |  | Carrying value |  | Level 1 |  | Level 2 |  | Level 3 |  | Total fair value
Financial assets: |  |  |  |  |  |  |  |  |  |
Cash and money market instruments |  | $ | 149,459 |  |  | $ | 149,459 |  |  | $ | — |  |  | $ | — |  |  | $ | 149,459 |
Investment securities |  | 1,585,568 |  |  | 1,941 |  |  | 1,584,984 |  |  | 769 |  |  | 1,587,694 |
Accrued interest receivable - securities |  | 4,436 |  |  | — |  |  | 4,436 |  |  | — |  |  | 4,436 |
Accrued interest receivable - loans |  | 14,239 |  |  | — |  |  | — |  |  | 14,239 |  |  | 14,239 |
Mortgage loans held for sale |  | 7,306 |  |  | — |  |  | 7,306 |  |  | — |  |  | 7,306 |
Impaired loans carried at fair value |  | 9,496 |  |  | — |  |  | — |  |  | 9,496 |  |  | 9,496 |
Mortgage IRLCs |  | 165 |  |  | — |  |  | 165 |  |  | — |  |  | 165 |
Other loans |  | 4,994,624 |  |  | — |  |  | — |  |  | 4,997,318 |  |  | 4,997,318 |
Loans receivable, net |  | $ | 5,011,591 |  |  | $ | — |  |  | $ | 7,471 |  |  | $ | 5,006,814 |  |  | $ | 5,014,285 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-interest bearing checking accounts |  | $ | 1,404,032 |  |  | $ | 1,404,032 |  |  | $ | — |  |  | — |  |  | $ | 1,404,032 |
Interest bearing transaction accounts |  | 1,107,200 |  |  | 1,107,200 |  |  | — |  |  | — |  |  | 1,107,200 |
Savings accounts |  | 1,544,708 |  |  | 1,544,708 |  |  | — |  |  | — |  |  | 1,544,708 |
Time deposits |  | 1,290,412 |  |  | — |  |  | 1,295,329 |  |  | — |  |  | 1,295,329 |
Other |  | 1,290 |  |  | 1,290 |  |  | — |  |  | — |  |  | 1,290 |
Total deposits |  | $ | 5,347,642 |  |  | $ | 4,057,230 |  |  | $ | 1,295,329 |  |  | $ | — |  |  | $ | 5,352,559 |
Short-term borrowings |  | $ | 394,242 |  |  | $ | — |  |  | $ | 394,242 |  |  | $ | — |  |  | $ | 394,242 |
Long-term debt |  | 738,105 |  |  | — |  |  | 771,420 |  |  | — |  |  | 771,420 |
Subordinated notes |  | 45,000 |  |  | — |  |  | 41,596 |  |  | — |  |  | 41,596 |
Accrued interest payable – deposits |  | 987 |  |  | 66 |  |  | 921 |  |  | — |  |  | 987 |
Accrued interest payable – debt/borrowings |  | 1,351 |  |  | 4 |  |  | 1,347 |  |  | — |  |  | 1,351 |
Derivative financial instruments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value swap |  | $ | 226 |  |  | $ | — |  |  | $ | — |  |  | $ | 226 |  |  | $ | 226 |
Impaired Financing Receivables [Table Text Block] |
|  | December 31, 2016
(In thousands) |  | Recorded Investment |  | Prior Charge-Offs |  | Specific Valuation Allowance |  | Carrying Balance
Impaired loans recorded at fair value |  | $ | 6,379 |  |  | $ | 3,681 |  |  | $ | 396 |  |  | $ | 5,983 |
Remaining impaired loans |  | 64,047 |  |  | 21,262 |  |  | 152 |  |  | 63,895 |
Total impaired loans |  | $ | 70,426 |  |  | $ | 24,943 |  |  | $ | 548 |  |  | $ | 69,878 |
|  | December 31, 2015
(In thousands) |  | Recorded Investment |  | Prior Charge-Offs |  | Specific Valuation Allowance |  | Carrying Balance
Impaired loans recorded at fair value |  | $ | 11,783 |  |  | $ | 10,512 |  |  | $ | 2,287 |  |  | $ | 9,496 |
Remaining impaired loans |  | 68,881 |  |  | 18,193 |  |  | 1,904 |  |  | 66,977 |
Total impaired loans |  | $ | 80,664 |  |  | $ | 28,705 |  |  | $ | 4,191 |  |  | $ | 76,473 |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 + Details
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- Definition Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets. This disclosure may include, but is not limited to, the fair value of the asset, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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