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NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Banking and Thrift, Interest [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net interest income | $ 59,158 | $ 57,971 | $ 57,441 | $ 57,697 | $ 58,748 | $ 56,971 | $ 52,637 | $ 45,493 | $ 232,267 | $ 213,849 | $ 178,691
Provision for loan losses | 4,100 | 4,734 | 4,522 | 4,006 | 4,431 | 4,240 | 4,204 | 3,851 | 17,362 | 16,726 | 14,968
Net interest income after provision for loan losses |  |  |  |  |  |  |  |  | 214,905 | 197,123 | 163,723
Total non-interest income | 16,725 | 18,941 | 14,555 | 15,630 | 12,248 | 12,698 | 16,780 | 12,562 | 65,851 | 54,288 | 47,770
Total non-interest expense | 61,090 | 48,844 | 46,268 | 47,100 | 48,279 | 49,378 | 54,025 | 45,148 | 203,302 | 196,829 | 165,986
Income from continuing operations before income taxes | 10,693 | 23,334 | 21,206 | 22,221 | 18,286 | 16,051 | 11,188 | 9,056 | 77,454 | 54,582 | 45,507
Income tax expense | 362 | 6,953 | 5,249 | 6,220 | 2,273 | 1,350 | 1,144 | 297 | 18,784 | 5,064 | 11,763
Net income | $ 10,331 | $ 16,381 | $ 15,957 | $ 16,001 | $ 16,013 | $ 14,701 | $ 10,044 | $ 8,759 | $ 58,670 | $ 49,518 | $ 33,744

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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.12) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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