SEGMENT INFORMATION (Details) |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2016
USD ($)
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Sep. 30, 2016
USD ($)
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Jun. 30, 2016
USD ($)
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Mar. 31, 2016
USD ($)
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Dec. 31, 2015
USD ($)
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Sep. 30, 2015
USD ($)
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Jun. 30, 2015
USD ($)
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Mar. 31, 2015
USD ($)
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Dec. 31, 2016
USD ($)
segment
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Dec. 31, 2015
USD ($)
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Dec. 31, 2014
USD ($)
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| Segment Disclosure information | |||||||||||
| Number of operating segments | segment | 4 | ||||||||||
| Segment information | |||||||||||
| Net interest income | $ 41,645,000 | $ 39,398,000 | $ 35,577,000 | $ 39,434,000 | $ 32,466,000 | $ 31,424,000 | $ 31,058,000 | $ 29,022,000 | $ 156,054,000 | $ 123,970,000 | $ 112,773,000 |
| Provision for loan and lease losses | 5,004,000 | 2,489,000 | 1,814,000 | 5,186,000 | 2,074,000 | 2,233,000 | 904,000 | 185,000 | 14,493,000 | 5,396,000 | 2,859,000 |
| Net refund transfer fees | 19,240,000 | 17,388,000 | 16,130,000 | ||||||||
| Mortgage banking income | 6,882,000 | 4,411,000 | 2,862,000 | ||||||||
| Program fees | 3,044,000 | 1,233,000 | 591,000 | ||||||||
| Gain on call of security available for sale | 88,000 | ||||||||||
| Other non interest income | 28,343,000 | 24,874,000 | 22,936,000 | ||||||||
| Total noninterest income | 10,485,000 | 11,301,000 | 10,802,000 | 24,921,000 | 7,717,000 | 7,806,000 | 9,485,000 | 22,986,000 | 57,509,000 | 47,994,000 | 42,519,000 |
| Total non interest expenses | 32,166,000 | 33,534,000 | 31,866,000 | 32,541,000 | 26,847,000 | 28,238,000 | 27,165,000 | 31,074,000 | 130,107,000 | 113,324,000 | 108,118,000 |
| INCOME BEFORE INCOME TAX EXPENSE | 14,960,000 | 14,676,000 | 12,699,000 | 26,628,000 | 11,262,000 | 8,759,000 | 12,474,000 | 20,749,000 | 68,963,000 | 53,244,000 | 44,315,000 |
| Income tax expense (benefit) | 4,960,000 | 4,848,000 | 4,359,000 | 8,893,000 | 3,844,000 | 3,119,000 | 4,154,000 | 6,961,000 | 23,060,000 | 18,078,000 | 15,528,000 |
| NET INCOME | 10,000,000 | $ 9,828,000 | $ 8,340,000 | $ 17,735,000 | 7,418,000 | $ 5,640,000 | $ 8,320,000 | $ 13,788,000 | 45,903,000 | 35,166,000 | 28,787,000 |
| Segment end of period total assets | 4,816,309,000 | 4,230,289,000 | $ 4,816,309,000 | $ 4,230,289,000 | $ 3,747,013,000 | ||||||
| Net interest margin (as percent) | 3.65% | 3.27% | 3.33% | ||||||||
| Core Banking Activities | |||||||||||
| Segment Disclosure information | |||||||||||
| Number of operating segments | segment | 3 | ||||||||||
| Segment information | |||||||||||
| Net interest income | $ 138,421,000 | $ 120,731,000 | $ 112,443,000 | ||||||||
| Provision for loan and lease losses | 3,945,000 | 3,065,000 | 3,392,000 | ||||||||
| Mortgage banking income | 6,882,000 | 4,411,000 | 2,862,000 | ||||||||
| Gain on call of security available for sale | 88,000 | ||||||||||
| Other non interest income | 26,468,000 | 23,942,000 | 21,745,000 | ||||||||
| Total noninterest income | 33,350,000 | 28,441,000 | 24,607,000 | ||||||||
| Total non interest expenses | 116,190,000 | 101,184,000 | 96,451,000 | ||||||||
| INCOME BEFORE INCOME TAX EXPENSE | 51,636,000 | 44,923,000 | 37,207,000 | ||||||||
| Income tax expense (benefit) | 16,777,000 | 15,066,000 | 12,875,000 | ||||||||
| NET INCOME | 34,859,000 | 29,857,000 | 24,332,000 | ||||||||
| Segment end of period total assets | 4,771,926,000 | 4,205,288,000 | $ 4,771,926,000 | $ 4,205,288,000 | $ 3,735,069,000 | ||||||
| Net interest margin (as percent) | 3.30% | 3.24% | 3.35% | ||||||||
| Traditional Banking | |||||||||||
| Segment information | |||||||||||
| Net interest income | $ 121,692,000 | $ 108,303,000 | $ 104,832,000 | ||||||||
| Provision for loan and lease losses | 3,448,000 | 2,897,000 | 3,042,000 | ||||||||
| Gain on call of security available for sale | 88,000 | ||||||||||
| Other non interest income | 26,090,000 | 23,670,000 | 21,489,000 | ||||||||
| Total noninterest income | 26,090,000 | 23,758,000 | 21,489,000 | ||||||||
| Total non interest expenses | 108,360,000 | 93,740,000 | 90,713,000 | ||||||||
| INCOME BEFORE INCOME TAX EXPENSE | 35,974,000 | 35,424,000 | 32,566,000 | ||||||||
| Income tax expense (benefit) | 11,015,000 | 11,505,000 | 11,251,000 | ||||||||
| NET INCOME | 24,959,000 | 23,919,000 | 21,315,000 | ||||||||
| Segment end of period total assets | 4,169,557,000 | 3,809,526,000 | $ 4,169,557,000 | $ 3,809,526,000 | $ 3,404,323,000 | ||||||
| Net interest margin (as percent) | 3.26% | 3.20% | 3.32% | ||||||||
| Warehouse Lending | |||||||||||
| Segment information | |||||||||||
| Net interest income | $ 16,529,000 | $ 12,209,000 | $ 7,428,000 | ||||||||
| Provision for loan and lease losses | 497,000 | 168,000 | 350,000 | ||||||||
| Other non interest income | 18,000 | 24,000 | 12,000 | ||||||||
| Total noninterest income | 18,000 | 24,000 | 12,000 | ||||||||
| Total non interest expenses | 3,142,000 | 2,526,000 | 1,857,000 | ||||||||
| INCOME BEFORE INCOME TAX EXPENSE | 12,908,000 | 9,539,000 | 5,233,000 | ||||||||
| Income tax expense (benefit) | 4,798,000 | 3,575,000 | 1,831,000 | ||||||||
| NET INCOME | 8,110,000 | 5,964,000 | 3,402,000 | ||||||||
| Segment end of period total assets | 584,916,000 | 386,414,000 | $ 584,916,000 | $ 386,414,000 | $ 319,153,000 | ||||||
| Net interest margin (as percent) | 3.59% | 3.58% | 3.77% | ||||||||
| Mortgage Banking | |||||||||||
| Segment information | |||||||||||
| Net interest income | $ 200,000 | $ 219,000 | $ 183,000 | ||||||||
| Mortgage banking income | 6,882,000 | 4,411,000 | 2,862,000 | ||||||||
| Other non interest income | 360,000 | 248,000 | 244,000 | ||||||||
| Total noninterest income | 7,242,000 | 4,659,000 | 3,106,000 | ||||||||
| Total non interest expenses | 4,688,000 | 4,918,000 | 3,881,000 | ||||||||
| INCOME BEFORE INCOME TAX EXPENSE | 2,754,000 | (40,000) | (592,000) | ||||||||
| Income tax expense (benefit) | 964,000 | (14,000) | (207,000) | ||||||||
| NET INCOME | 1,790,000 | (26,000) | (385,000) | ||||||||
| Segment end of period total assets | 17,453,000 | 9,348,000 | 17,453,000 | 9,348,000 | 11,593,000 | ||||||
| Republic Processing Group | |||||||||||
| Segment information | |||||||||||
| Net interest income | 17,633,000 | 3,239,000 | 330,000 | ||||||||
| Provision for loan and lease losses | 10,548,000 | 2,331,000 | (533,000) | ||||||||
| Net refund transfer fees | 19,240,000 | 17,388,000 | 16,130,000 | ||||||||
| Program fees | 3,044,000 | 1,233,000 | 591,000 | ||||||||
| Other non interest income | 1,875,000 | 932,000 | 1,191,000 | ||||||||
| Total noninterest income | 24,159,000 | 19,553,000 | 17,912,000 | ||||||||
| Total non interest expenses | 13,917,000 | 12,140,000 | 11,667,000 | ||||||||
| INCOME BEFORE INCOME TAX EXPENSE | 17,327,000 | 8,321,000 | 7,108,000 | ||||||||
| Income tax expense (benefit) | 6,283,000 | 3,012,000 | 2,653,000 | ||||||||
| NET INCOME | 11,044,000 | 5,309,000 | 4,455,000 | ||||||||
| Segment end of period total assets | $ 44,383,000 | $ 25,001,000 | $ 44,383,000 | $ 25,001,000 | $ 11,944,000 | ||||||