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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Summary of assets and financial liabilities measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value | The following table summarizes assets and liabilities measured at fair value on a recurring basis as of year-end 2016 and 2015 segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:
|  | December 31, 2016
(In thousands) |  | Level 1 Inputs |  | Level 2 Inputs |  | Level 3 Inputs |  | Total Fair Value
Trading security |  | $ | — |  |  | $ | — |  |  | $ | 13,229 |  |  | $ | 13,229 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |
Municipal bonds and obligations |  | — |  |  | 119,816 |  |  | — |  |  | 119,816 |
Agency collateralized mortgage obligations |  | — |  |  | 651,911 |  |  | — |  |  | 651,911 |
Agency residential mortgage-backed securities |  | — |  |  | 228,684 |  |  | — |  |  | 228,684 |
Agency commercial mortgage-backed securities |  | — |  |  | 64,534 |  |  | — |  |  | 64,534 |
Corporate bonds |  | — |  |  | 56,006 |  |  | — |  |  | 56,006 |
Trust preferred securities |  | — |  |  | 11,887 |  |  | — |  |  | 11,887 |
Other bonds and obligations |  | — |  |  | 11,158 |  |  | — |  |  | 11,158 |
Marketable equity securities |  | 62,284 |  |  | 3,257 |  |  | — |  |  | 65,541 |
Loans held for sale |  | — |  |  | 120,673 |  |  | — |  |  | 120,673 |
Derivative assets |  | 622 |  |  | 16,157 |  |  | 4,838 |  |  | 21,617 |
Other assets |  | — |  |  | — |  |  | 798 |  |  | 798 |
Derivative liabilities |  | — |  |  | 24,420 |  |  | — |  |  | 24,420 |
|  | December 31, 2015
(In thousands) |  | Level 1 Inputs |  | Level 2 Inputs |  | Level 3 Inputs |  | Total Fair Value
Trading security |  | $ | — |  |  | $ | — |  |  | $ | 14,189 |  |  | $ | 14,189 |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |
Municipal bonds and obligations |  | — |  |  | 104,561 |  |  | — |  |  | 104,561 |
Agency collateralized mortgage obligations |  | — |  |  | 833,036 |  |  | — |  |  | 833,036 |
Agency residential mortgage-backed securities |  | — |  |  | 126,829 |  |  | — |  |  | 126,829 |
Agency commercial mortgage-backed securities |  | — |  |  | — |  |  | — |  |  | — |
Corporate bonds |  | — |  |  | 41,023 |  |  | — |  |  | 41,023 |
Trust preferred securities |  | — |  |  | 11,900 |  |  | — |  |  | 11,900 |
Other bonds and obligations |  | — |  |  | 3,141 |  |  | — |  |  | 3,141 |
Marketable equity securities |  | 32,925 |  |  | 334 |  |  | 708 |  |  | 33,967 |
Loans held for sale |  | — |  |  | 13,191 |  |  | — |  |  | 13,191 |
Derivative assets |  | 45 |  |  | 17,130 |  |  | 332 |  |  | 17,507 |
Other assets |  | — |  |  | — |  |  | — |  |  | — |
Derivative liabilities |  | — |  |  | 28,181 |  |  | — |  |  | 28,181 |
Schedule of loans held for sale |
|  | Aggregate Fair Value |  | Aggregate Unpaid Principal |  | Aggregate Fair Value Less Aggregate Unpaid Principal
December 31, 2016 (In thousands) |  |  |
Loans Held for Sale |  | $ | 120,673 |  |  | $ | 118,178 |  |  | $ | 2,495 |
|  | Aggregate Fair Value |  | Aggregate Unpaid Principal |  | Aggregate Fair Value Less Aggregate Unpaid Principal
December 31, 2015 (In thousands) |  |  |
Loans Held for Sale |  | $ | 13,191 |  |  | $ | 12,914 |  |  | $ | 277 |
Schedule of changes in level 3 assets and liabilities that were measured at fair value on a recurring basis | The table below presents the changes in Level 3 assets that were measured at fair value on a recurring basis at year-end 2016 and 2015:
|  | Assets (Liabilities)
(In thousands) |  | Trading Security |  | Securities Available for Sale |  | Commitments to Lend |  | Forward Commitments |  | Capitalized Servicing Rights
Balance as of December 31, 2014 |  | $ | 14,909 |  |  | $ | 2,326 |  |  | $ | 625 |  |  | $ | (93 | ) |  |
Sale of AFS Security |  | — |  |  | (1,327 | ) |  | — |  |  | — |  |  | — |
Unrealized (loss) gain, net recognized in other non-interest income |  | (150 | ) |  | — |  |  | 4,364 |  |  | 102 |  |  | — |
Unrealized gain included in accumulated other comprehensive loss |  | — |  |  | (291 | ) |  | — |  |  | — |  |  | — |
Paydown of trading security |  | (570 | ) |  | — |  |  | — |  |  | — |  |  | — |
Transfers to loans held for sale |  | — |  |  | — |  |  | (4,666 | ) |  | — |  |  | — |
Balance as of December 31, 2015 |  | $ | 14,189 |  |  | $ | 708 |  |  | $ | 323 |  |  | $ | 9 |  |  | $ | — |
Amounts acquired from First Choice Bank |  | — |  |  | — |  |  | 3,900 |  |  | — |  |  | 696 |
Unrealized (loss) gain, net recognized in other non-interest income |  | (362 | ) |  | — |  |  | 13,563 |  |  | 91 |  |  | 102 |
Unrealized gain included in accumulated other comprehensive loss |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Transfers to Level 2 |  | — |  |  | (708 | ) |  | — |  |  | — |  |  | — |
Paydown of trading security |  | (598 | ) |  | — |  |  | — |  |  | — |  |  | — |
Transfers to loans held for sale |  | — |  |  | — |  |  | (13,048 | ) |  | — |  |  | — |
Balance as of December 31, 2016 |  | $ | 13,229 |  |  | $ | — |  |  | $ | 4,738 |  |  | $ | 100 |  |  | $ | 798 |
Unrealized gains (losses) relating to instruments still held at December 31, 2016 |  | $ | 1,843 |  |  | $ | — |  |  | $ | 4,738 |  |  | $ | 100 |  |  | $ | 102 |
Unrealized gains (losses) relating to instruments still held at December 31, 2015 |  | $ | 2,204 |  |  | $ | (61 | ) |  | $ | 323 |  |  | $ | 9 |  |  | $ | — |
Schedule of quantitative information about the significant unobservable inputs within Level 3 | The following is a summary of applicable non-recurring fair value measurements. There are no liabilities measured on a non-recurring basis.
|  | December 31, 2016 |  |  | Fair Value Measurements as of December 31, 2016
(In thousands) |  | Level 3 Inputs |  |  | Level 3 Inputs
Assets |  |  |  |  |  |
Impaired loans |  | $ | 17,761 |  |  |  | December 2016
Capitalized servicing rights |  | 10,726 |  |  |  | December 2016
Other real estate owned |  | 151 |  |  |  | Feb. 2016 - July 2016
Total |  | $ | 28,638 |  |  |  |
|  | December 31, 2015 |  |  | Fair Value Measurements as of December 31, 2015
(In thousands) |  | Level 3 Inputs |  |  | Level 3 Inputs
Assets |  |  |  |  |  |
Impaired loans |  | $ | 11,657 |  |  |  | December 2015
Capitalized servicing rights |  | 5,187 |  |  |  | November 2015
Other real estate owned |  | 1,725 |  |  |  | Feb. 2014 - October 2015
Total |  | $ | 18,569 |  |  |  |
Summary of applicable non-recurring fair value measurements | The estimated fair values, and related carrying amounts, of the Company’s financial instruments follow. Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company.
|  | December 31, 2016
|  | Carrying Amount |  | Fair Value |  |  |  |  |  |
(In thousands) |  |  |  | Level 1 |  | Level 2 |  | Level 3
Financial Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 113,075 |  |  | $ | 113,075 |  |  | $ | 113,075 |  |  | $ | — |  |  | $ | — |
Trading security |  | 13,229 |  |  | 13,229 |  |  | — |  |  | — |  |  | 13,229 |
Securities available for sale |  | 1,209,537 |  |  | 1,209,537 |  |  | 62,284 |  |  | 1,147,253 |  |  | — |
Securities held to maturity |  | 334,368 |  |  | 337,680 |  |  | — |  |  | 300,806 |  |  | 36,874 |
FHLB stock and restricted equity securities |  | 71,112 |  |  | 71,112 |  |  | — |  |  | 71,112 |  |  | — |
Net loans |  | 6,505,789 |  |  | 6,532,745 |  |  | — |  |  | — |  |  | 6,532,745 |
Loans held for sale |  | 120,673 |  |  | 120,673 |  |  | — |  |  | 120,673 |  |  | — |
Accrued interest receivable |  | 26,113 |  |  | 26,113 |  |  | — |  |  | 26,113 |  |  | — |
Cash surrender value of bank-owned life insurance policies |  | 139,257 |  |  | 139,257 |  |  | — |  |  | 139,257 |  |  | — |
Derivative assets |  | 21,617 |  |  | 21,617 |  |  | 622 |  |  | 16,157 |  |  | 4,838 |
Assets held for sale |  | 322 |  |  | 322 |  |  | — |  |  | 322 |  |  | — |
Financial Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total deposits |  | 6,622,092 |  |  | 6,624,108 |  |  | — |  |  | 6,624,108 |  |  | — |
Short-term debt |  | 1,082,044 |  |  | 1,081,996 |  |  | — |  |  | 1,081,996 |  |  | — |
Long-term FHLB advances |  | 142,792 |  |  | 143,151 |  |  | — |  |  | 143,151 |  |  | — |
Subordinated notes |  | 89,161 |  |  | 96,973 |  |  | — |  |  | 96,973 |  |  | — |
Derivative liabilities |  | 24,420 |  |  | 24,420 |  |  | — |  |  | 24,420 |  |  | — |
|  | December 31, 2015
|  | Carrying Amount |  | Fair Value |  |  |  |  |  |
(In thousands) |  |  |  | Level 1 |  | Level 2 |  | Level 3
Financial Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 103,562 |  |  | $ | 103,562 |  |  | $ | 103,562 |  |  | $ | — |  |  | $ | — |
Trading security |  | 14,189 |  |  | 14,189 |  |  | — |  |  | — |  |  | 14,189 |
Securities available for sale |  | 1,154,457 |  |  | 1,154,457 |  |  | 32,925 |  |  | 1,120,824 |  |  | 708 |
Securities held to maturity |  | 131,652 |  |  | 136,904 |  |  | — |  |  | 98,367 |  |  | 38,537 |
FHLB stock and restricted equity securities |  | 71,018 |  |  | 71,018 |  |  | — |  |  | 71,018 |  |  | — |
Net loans |  | 5,685,928 |  |  | 5,727,570 |  |  | — |  |  | — |  |  | 5,727,570 |
Loans held for sale |  | 13,191 |  |  | 13,191 |  |  | — |  |  | 13,191 |  |  | — |
Accrued interest receivable |  | 20,940 |  |  | 20,940 |  |  | — |  |  | 20,940 |  |  | — |
Cash surrender value of bank-owned life insurance policies |  | 125,233 |  |  | 125,233 |  |  | — |  |  | 125,233 |  |  | — |
Derivative assets |  | 17,507 |  |  | 17,507 |  |  | 45 |  |  | 17,130 |  |  | 332 |
Assets held for sale |  | 278 |  |  | 278 |  |  | — |  |  | 278 |  |  | — |
Financial Liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total deposits |  | 5,589,135 |  |  | 5,582,835 |  |  | — |  |  | 5,582,835 |  |  | — |
Short-term debt |  | 1,071,200 |  |  | 1,071,044 |  |  | — |  |  | 1,071,044 |  |  | — |
Long-term FHLB advances |  | 103,135 |  |  | 103,397 |  |  | — |  |  | 103,397 |  |  | — |
Subordinated notes |  | 89,812 |  |  | 93,291 |  |  | — |  |  | 93,291 |  |  | — |
Derivative liabilities |  | 28,181 |  |  | 28,181 |  |  | — |  |  | 28,181 |  |  | — |
Recurring |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Schedule of quantitative information about the significant unobservable inputs within Level 3 | Quantitative information about the significant unobservable inputs within Level 3 recurring assets/(liabilities) as of December 31, 2016 and 2015 are as follows:
|  | Fair Value |  |  |  |  |  | Significant Unobservable Input Value
(In thousands) |  | December 31, 2016 |  | Valuation Techniques |  | Unobservable Inputs |
Assets |  |  |  |  |  |  |  |  |  |
Trading Security |  | $ | 13,229 |  |  | Discounted Cash Flow |  | Discount Rate |  | 2.62 | %
Forward Commitments |  | 100 |  |  | Historical Trend |  | Closing Ratio |  | 80.36 | %
|  |  |  | Pricing Model |  | Origination Costs, per loan |  | $ | 3,692 |
Commitments to Lend |  | 4,738 |  |  | Historical Trend |  | Closing Ratio |  | 80.36 | %
|  |  |  | Pricing Model |  | Origination Costs, per loan |  | $ | 3,692 |
Capitalized Servicing Rights |  | 798 |  |  | Discounted cash flow |  | Constant prepayment rate (CPR) |  | 10.40 | %
|  |  |  |  |  | Discount rate |  | 11.00 | %
Total |  | $ | 18,865 |  |  |  |  |  |  |  |
|  | Fair Value |  |  |  |  |  | Significant Unobservable Input Value
(In thousands) |  | December 31, 2015 |  | Valuation Techniques |  | Unobservable Inputs |
Assets |  |  |  |  |  |  |  |  |  |
Trading Security |  | $ | 14,189 |  |  | Discounted Cash Flow |  | Discount Rate |  | 2.49 | %
Securities Available for Sale |  | 708 |  |  | Pricing Model |  | Median Peer Price/ Tangible Book Value Percentage Multiple |  | 88.52 | %
Forward Commitments |  | 9 |  |  | Historical Trend |  | Closing Ratio |  | 92.57 | %
|  |  |  | Pricing Model |  | Origination Costs, per loan |  | $ | 2,500 |
Commitments to Lend |  | 323 |  |  | Historical Trend |  | Closing Ratio |  | 92.57 | %
|  |  |  | Pricing Model |  | Origination Costs, per loan |  | $ | 2,500 |
Total |  | $ | 15,229 |  |  |  |  |  |  |  |
Non-recurring |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Schedule of quantitative information about the significant unobservable inputs within Level 3 | Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2016 and 2015 are as follows:
(in thousands) |  | December 31, 2016 |  | Valuation Techniques |  | Unobservable Inputs |  | Range (Weighted Average) (a)
Assets |  |  |  |  |  |  |  |  |
Impaired loans |  | $ | 17,761 |  |  | Fair value of collateral |  | Loss severity |  | 0% to 88.70% (9.73%)
|  |  |  |  |  |  | Appraised value |  | $0 to $2,192 ($1,026)
Capitalized servicing rights |  | 10,726 |  |  | Discounted cash flow |  | Constant prepayment rate (CPR) |  | 7.35% to 14.28% (10.44%)
|  |  |  |  |  |  | Discount rate |  | 10.00% to 14.00% (11.77%)
Other real estate owned |  | 151 |  |  | Fair value of collateral |  | Appraised value |  | $101 to $129 ($122)
Total Assets |  | $ | 28,638 |  |  |  |  |  |  |
(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 individuals properties.
(in thousands) |  | December 31, 2015 |  | Valuation Techniques |  | Unobservable Inputs |  | Range (Weighted Average) (a)
Assets |  |  |  |  |  |  |  |  |
Impaired loans |  | $ | 11,657 |  |  | Fair value of collateral |  | Loss severity |  | .05% to 29.50% (7.55%)
|  |  |  |  |  |  | Appraised value |  | $46.3 to $1962.0 ($999.7)
Capitalized servicing rights |  | 5,187 |  |  | Discounted cash flow |  | Constant prepayment rate (CPR) |  | 7.17% to 12.06% (10.02%)
|  |  |  |  |  |  | Discount rate |  | 10.00% to 15.00 (10.88%)
Other real estate owned |  | 1,725 |  |  | Fair value of collateral |  | Appraised value |  | $39 to $1,200.0 ($919.9)
Total Assets |  | $ | 18,569 |  |  |  |  |  |  |
(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 individuals properties.

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- Definition Tabular disclosure of the fair value measurement of assets and liabilities 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 and liabilities. + References No definition available. + Details
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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 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 the application of the fair value option for measurement and reporting of eligible financial assets and liabilities (as defined), as well as certain other eligible items (as defined) included in the statement of financial position, whether such option is elected for a single eligible item or a group of similar eligible items and is in addition to other disclosures concerning fair value which the company may be required to provide. Such disclosure might be expected to include: (1) for items included in the statement of financial position: (a) for each line item in the statement of financial position that includes an item or items for which the fair value option has been elected, provide the aggregate carrying amount of ineligible items included in each line item in the balance sheet, if any; (b) the difference between the aggregate fair value and the aggregate unpaid principal balance (assuming contractual principal amounts and fair value option elected) of: (i) loans and long-term receivables (other than securities otherwise reported at fair value) and (ii) long-term debt instruments; (c) for loans held as assets for which the fair value option has been elected: (i) the aggregate fair value of loans that are 90 days or more past due, (ii) if the policy is to recognize interest income separately from other changes in fair value, the aggregate fair value of loans in nonaccrual status, and (iii) the difference between the aggregate fair value and the aggregate unpaid principal balance for loans that are 90 days or more past due, in nonaccrual status, or both; (2) for items included in the income statement: (a) the amounts of gains and losses from fair value changes included in earnings and in which line in the income statement those gains and losses are reported whether or not combined with gains and losses from items required to be accounted for at fair value; (b) for loans and other receivables held as assets, the estimated amount of gains or losses included in earnings attributable to changes in instrument-specific credit risk; (c) for liabilities with fair values that have been significantly affected during the reporting period by changes in the instrument-specific credit risk, the estimated amount of gains and losses from fair value changes included in earnings that are attributable to changes in the instrument-specific credit risk; and (3) certain other disclosures as required or determined to be provided. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14217-108612 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -Subparagraph (c)(2),(d),(e) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a),(c)(1),(d)(1) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 + 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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