| **Quarterly Results of Operations (Unaudited) (Tables)**  | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
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| **Quarterly Financial Information Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Schedule of Quarterly Results of Operations (Unaudited)   | The following table sets forth certain quarterly results for the years ended December 31, 2016 and 2015: 2016 2015 First Second Third Fourth First Second Third FourthInterest income$61,227 $62,704 $64,376 $65,005 $52,944 $55,202 $56,538 $56,514Interest expense6,772 6,742 6,694 6,631 5,968 6,171 6,215 6,440Net interest income54,455 55,962 57,682 58,374 46,976 49,031 50,323 50,074Provision for loan losses550 790 1,900 2,417  417  Net interest income after provision for loan losses53,905 55,172 55,782 55,957 46,976 48,614 50,323 50,074Non-interest income15,837 16,385 16,861 16,120 15,399 24,106 16,332 14,031Non-interest expense46,475 44,835 44,115 41,934 40,369 45,896 43,031 45,510Income before income tax expense23,267 26,722 28,528 30,143 22,006 26,824 23,624 18,595Income tax expense5,574 6,716 7,469 7,850 5,834 8,856 6,557 4,418Net income available to common stockholders$17,693 $20,006 $21,059 $22,293 $16,172 $17,968 $17,067 $14,177                Basic EPS$0.43 $0.50 $0.51 $0.55 $0.43 $0.47 $0.46 $0.37Diluted EPS$0.43 $0.49 $0.51 $0.55 $0.43 $0.47 $0.45 $0.37Average Shares Outstanding:               Basic40,690,573 40,751,720 40,779,423 40,846,650 37,709,883 37,793,448 37,850,827 37,908,873Diluted40,916,972 40,969,111 41,025,784 41,124,179 38,000,074 38,043,359 38,118,199 38,190,694 |

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No definition available.
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| - Definition
Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306
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