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FAIR VALUE MEASUREMENTS (Tables) | 3 Months Ended
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Mar. 31, 2020
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2020
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
(in thousands) | ​ | Inputs | ​ | Inputs | ​ | Inputs | ​ | Fair Value
Available for sale securities: | ​ | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Mortgage-backed securities: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
US Government-sponsored enterprises | ​ | $ | — | ​ | $ | 295,657 | ​ | $ | — | ​ | $ | 295,657
US Government agency | ​ |  | — | ​ |  | 101,669 | ​ |  | — | ​ |  | 101,669
Private label | ​ |  | — | ​ |  | 18,499 | ​ |  | — | ​ |  | 18,499
Obligations of states and political subdivisions thereof | ​ |  | — | ​ |  | 137,579 | ​ |  | — | ​ |  | 137,579
Corporate bonds | ​ |  | — | ​ |  | 72,937 | ​ |  | — | ​ |  | 72,937
Derivative assets | ​ |  | — | ​ |  | 24,933 | ​ |  | 93 | ​ |  | 25,026
Derivative liabilities | ​ |  | — | ​ |  | (28,032) | ​ |  | (73) | ​ |  | (28,105)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
(in thousands) | ​ | Inputs | ​ | Inputs | ​ | Inputs | ​ | Fair Value
Available for sale securities: | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Mortgage-backed securities: |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
US Government-sponsored enterprises | ​ | $ | — | ​ | $ | 321,969 | ​ | $ | — | ​ | $ | 321,969
US Government agency | ​ |  | — | ​ |  | 99,661 | ​ |  | — | ​ |  | 99,661
Private label | ​ |  | — | ​ |  | 19,533 | ​ |  | — | ​ |  | 19,533
Obligations of states and political subdivisions thereof | ​ |  | — | ​ |  | 142,006 | ​ |  | — | ​ |  | 142,006
Corporate bonds | ​ |  | — | ​ |  | 80,061 | ​ |  | — | ​ |  | 80,061
Derivative assets | ​ |  | — | ​ |  | 6,791 | ​ |  | 59 | ​ |  | 6,850
Derivative liabilities | ​ |  | — | ​ |  | (8,102) | ​ |  | (84) | ​ |  | (8,186)
Schedule of Changes in Level 3 Assets Measured on a Recurring Basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Assets (Liabilities)
​ | ​ | Interest Rate Lock | ​ | Forward
(in thousands) |  | Commitments |  | Commitments
Three Months Ended March 31, 2020 | ​ |  | ​ | ​ |  | ​
Balance at beginning of period | ​ | $ | 59 | ​ | $ | (84)
Realized gain recognized in non-interest income | ​ |  | 34 | ​ |  | 11
Balance at end of period | ​ | $ | 93 | ​ | $ | (73)
​ | ​ | ​ | ​ | ​ | ​ | ​
Three Months Ended March 31, 2019 | ​ |  | ​ | ​ |  | ​
Balance at beginning of period | ​ | $ | 8 | ​ | $ | —
Realized gain recognized in non-interest income | ​ |  | 6 | ​ |  | (65)
Balance at end of period | ​ | $ | 14 | ​ | $ | (65)
​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of Changes in Level 3 Liabilities Measured on a Recurring Basis |
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Assets (Liabilities)
​ | ​ | Interest Rate Lock | ​ | Forward
(in thousands) |  | Commitments |  | Commitments
Three Months Ended March 31, 2020 | ​ |  | ​ | ​ |  | ​
Balance at beginning of period | ​ | $ | 59 | ​ | $ | (84)
Realized gain recognized in non-interest income | ​ |  | 34 | ​ |  | 11
Balance at end of period | ​ | $ | 93 | ​ | $ | (73)
​ | ​ | ​ | ​ | ​ | ​ | ​
Three Months Ended March 31, 2019 | ​ |  | ​ | ​ |  | ​
Balance at beginning of period | ​ | $ | 8 | ​ | $ | —
Realized gain recognized in non-interest income | ​ |  | 6 | ​ |  | (65)
Balance at end of period | ​ | $ | 14 | ​ | $ | (65)
​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of Quantitative Information, Valuation, Recurring |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value | ​ | Fair Value | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31, | ​ | Valuation | ​ | Unobservable | ​ | Unobservable | ​
(in thousands, except ratios) |  | 2020 |  | 2019 | ​ | Techniques |  | Inputs |  | Input Value |
Assets (Liabilities) | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ |  | ​ |  | ​ |
Interest Rate Lock Commitment |  | $ | 93 | ​ | $ | 59 | ​ | Historical trend |  | Closing Ratio |  | ​ | 90 | %
​ | ​ |  | ​ | ​ |  | ​ | ​ | Pricing Model | ​ | Origination Costs, per loan | ​ | $ | 1.7 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ | ​ | ​ | ​
Forward Commitments | ​ |  | (73) | ​ |  | (84) | ​ | Quoted prices for similar loans in active markets. |  | Freddie Mac pricing system | ​ |  | Pair-off contract price | ​
Total | ​ | $ | 20 | ​ | $ | (25) | ​ |  |  |  | ​ |  |  | ​
Summary of Applicable Non-Recurring Fair Value Measurements | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Fair Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Three Months Ended | ​ | Measurement Date as of
​ | ​ | March 31, 2020 | ​ | December 31, 2019 | ​ | March 31, 2020 | ​ | March 31, 2020
​ | ​ | Level 3 | ​ | Level 3 | ​ | Total | ​ | Level 3
(in thousands) |  | Inputs |  | Inputs |  | Gains (Losses) |  | Inputs
Assets | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Impaired loans | ​ | $ | 8,335 | ​ | $ | 9,625 | ​ | $ | 1,290 | ​ | March 2020
Capitalized servicing rights | ​ |  | 3,897 | ​ | ​ | 4,301 |  | ​ | — |  | March 2020
Other real estate owned | ​ |  | 2,205 | ​ | ​ | 2,236 |  | ​ | (31) |  | August 2019
Premises held for sale | ​ |  | 1,764 | ​ | ​ | 1,764 |  | ​ | — |  | September 2019
Total | ​ | $ | 16,201 | ​ | $ | 17,926 | ​ | $ | 1,259 |  |
Schedule of Quantitative Information, Valuation, Non-recurring |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value | ​ | ​ | ​ | ​ | ​ | Range |
(in thousands, except ratios) |  | March 31, 2020 |  | Valuation Techniques |  | Unobservable Inputs |  | (Weighted Average)(a) |
Assets |  | ​ |  |  |  |  |  | ​ | ​ |  | ​
Impaired loans | ​ | $ | 4,947 |  | Fair value of collateral -appraised value |  | Loss severity | ​ | ​ | 0% to 70% | ​
​ | ​ | ​ | ​ | ​ | ​ |  | Appraised value | ​ | ​ | $0 to $975 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Impaired loans | ​ |  | 3,388 |  | Discount cash flow |  | Discount rate |  | ​ | 3.50% to 9.50% | ​
​ | ​ | ​ | ​ | ​ | ​ |  | Cash flows | ​ | ​ | $21 to $1,002 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Capitalized servicing rights | ​ |  | 3,897 |  | Discounted cash flow |  | Constant prepayment rate (CPR) |  | ​ | 11.91 | %
​ | ​ |  |  |  |  |  | Discount rate |  | ​ | 11.33 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other real estate owned | ​ |  | 2,205 |  | Fair value of collateral less selling costs |  | Appraised value |  | $ | 2,695 | ​
​ | ​ |  |  |  |  |  | Selling Costs |  | ​ | 6% to 10% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Premises held for sale(b) | ​ |  | 1,764 |  | Fair value of asset less selling costs |  | Appraised value | ​ | ​ | $136 to $527 | ​
​ | ​ |  |  |  |  |  | Selling Costs |  | ​ | 6 | %
Total | ​ | $ | 16,201 |  |  |  |  |  | ​ |  | ​
(a) | Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individual properties.
(b) | The carrying value of premises held for sale was $1.8 million as of March 31, 2020.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fair Value | ​ | ​ | ​ | ​ | ​ | Range | ​
(in thousands, except ratios) |  | December 31, 2019 |  | Valuation Techniques |  | Unobservable Inputs |  | (Weighted Average)(a) | ​
Assets | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Impaired loans | ​ | $ | 6,137 | ​ | Fair value of collateral -appraised value | ​ | Loss severity | ​ | ​ | 0% to 55.00% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Appraised value | ​ | ​ | $0 to $6,915 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Impaired loans | ​ |  | 3,488 | ​ | Discount cash flow | ​ | Discount rate |  | ​ | 2.88% to 9.50% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Cash flows | ​ | ​ | $22 to $1,002 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Capitalized servicing rights | ​ |  | 4,301 | ​ | Discounted cash flow | ​ | Constant prepayment rate (CPR) |  | ​ | 9.95 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | Discount rate |  | ​ | 10.07 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Other real estate owned | ​ |  | 2,236 | ​ | Fair value of collateral less selling costs | ​ | Appraised value |  | $ | 2,695 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Selling Costs | ​ | ​ | 10% to 20% | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Premises held for sale(b) | ​ |  | 1,764 | ​ | Fair value of asset less selling costs | ​ | Appraised value |  | $ | $136 to $527 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Selling Costs |  | ​ | 6.00 | %
Total | ​ | $ | 17,926 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) | Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individual properties.
(b) | The carrying value of premises held for sale was $1.8 million as of December 31, 2019.
Summary of Estimated Fair Values, and Related Carrying Amounts, of Financial Instruments |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2020
​ | ​ | Carrying | ​ | Fair | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | Amount |  | Value |  | Level 1 |  | Level 2 |  | Level 3
Financial Assets |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash and cash equivalents | ​ | $ | 85,655 | ​ | $ | 85,655 | ​ | $ | 85,655 | ​ | $ | — | ​ | $ | —
Securities available for sale | ​ |  | 626,341 | ​ |  | 626,341 | ​ |  | — | ​ |  | 626,341 | ​ |  | —
FHLB stock | ​ |  | 19,897 | ​ |  | 19,897 | ​ |  | — | ​ |  | 19,897 | ​ |  | —
Net loans | ​ |  | 2,619,686 | ​ |  | 2,604,406 | ​ |  | — | ​ |  | — | ​ |  | 2,604,406
Accrued interest receivable | ​ |  | 3,268 | ​ |  | 3,268 | ​ |  | — | ​ |  | 3,268 | ​ |  | —
Cash surrender value of bank-owned life insurance policies | ​ |  | 76,400 | ​ |  | 76,400 | ​ |  | — | ​ |  | 76,400 | ​ |  | —
Derivative assets | ​ |  | 25,026 | ​ |  | 25,026 | ​ |  | — | ​ |  | 24,933 | ​ |  | 93
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Financial Liabilities | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Non-maturity deposits | ​ | $ | 1,806,460 | ​ | $ | 1,861,960 | ​ | $ | — | ​ | $ | 1,861,960 | ​ | $ | —
Time deposits | ​ | ​ | 844,097 | ​ | ​ | 852,346 | ​ | ​ | — | ​ | ​ | 852,346 | ​ | ​ | —
Short-term other borrowings | ​ |  | 31,001 | ​ |  | 31,000 | ​ |  | — | ​ |  | 31,000 | ​ |  | —
FHLB advances | ​ |  | 404,579 | ​ |  | 410,065 | ​ |  | — | ​ |  | 410,065 | ​ |  | —
FRB advances | ​ | ​ | 62,000 | ​ | ​ | 62,000 | ​ | ​ | — | ​ | ​ | 62,000 | ​ | ​ | —
Subordinated borrowings | ​ |  | 59,849 | ​ |  | 59,849 | ​ |  | — | ​ |  | 59,849 | ​ |  | —
Derivative liabilities | ​ |  | 28,105 | ​ |  | 28,105 | ​ |  | — | ​ |  | 28,032 | ​ |  | 73
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ | ​ | Carrying | ​ | Fair | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | Amount |  | Value |  | Level 1 |  | Level 2 |  | Level 3
Financial Assets |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Cash and cash equivalents | ​ | $ | 56,910 | ​ | $ | 56,910 | ​ | $ | 56,910 | ​ | $ | — | ​ | $ | —
Securities available for sale | ​ |  | 663,230 | ​ |  | 663,230 | ​ |  | — | ​ |  | 663,230 | ​ |  | —
FHLB stock | ​ |  | 20,679 | ​ |  | 20,679 | ​ |  | — | ​ |  | 20,679 | ​ |  | —
Net loans | ​ |  | 2,625,739 | ​ |  | 2,634,147 | ​ |  | — | ​ |  | — | ​ |  | 2,634,147
Accrued interest receivable | ​ |  | 3,294 | ​ |  | 3,294 | ​ |  | — | ​ |  | 3,294 | ​ |  | —
Cash surrender value of bank-owned life insurance policies | ​ |  | 75,863 | ​ |  | 75,863 | ​ |  | — | ​ |  | 75,863 | ​ |  | —
Derivative assets | ​ |  | 6,850 | ​ |  | 6,850 | ​ |  | — | ​ |  | 6,791 | ​ |  | 59
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Financial Liabilities | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Non-maturity deposits | ​ | $ | 1,763,116 | ​ | $ | 1,751,481 | ​ | $ | — | ​ | $ | 1,751,481 | ​ | $ | —
Time deposits | ​ | ​ | 932,635 | ​ | ​ | 932,886 | ​ | ​ | — | ​ | ​ | 932,886 | ​ | ​ | —
Short-term other borrowings | ​ |  | 44,832 | ​ |  | 44,831 | ​ |  | — | ​ |  | 44,831 | ​ |  | —
FHLB advances | ​ |  | 426,564 | ​ |  | 425,989 | ​ |  | — | ​ |  | 425,989 | ​ |  | —
Subordinated borrowings | ​ |  | 59,920 | ​ |  | 59,920 | ​ |  | — | ​ |  | 59,920 | ​ |  | —
Derivative liabilities | ​ |  | 8,186 | ​ |  | 8,186 | ​ |  | — | ​ |  | 8,102 | ​ |  | 84

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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