| Segment Reporting Disclosure [Text Block] |
The Company’s three reportable segments represent distinct product lines and are viewed separately for strategic planning purposes and internal reporting. The 2014 totals include the receivable factoring results for four months, as NBC acquired its controlling interest in CBI on August 29, 2014. The following table is a reconciliation of the reportable segment revenues, expenses and profit to the Company’s consolidated totals. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the Twelve Months Ended December 31, 2016 | | | | | | | | | | | | | | | | | | | | | | | | $ | 64,256 | | | | 489 | | | | 11,762 | | | | (1,944 | ) | | | 74,563 | | | | | | 7,181 | | | | 200 | | | | 1,944 | | | | (1,944 | ) | | | 7,381 | | | | | | 57,075 | | | | 289 | | | | 9,818 | | | | - | | | | 67,182 | | Provision for loan and lease losses | | | 2,325 | | | | - | | | | 923 | | | | - | | | | 3,248 | | | | | | 5,848 | | | | 8,039 | | | | 69 | | | | - | | | | 13,956 | | | | | | 37,280 | | | | 6,604 | | | | 5,195 | | | | - | | | | 49,079 | | Net earnings before tax and noncontrolling interest | | | 23,318 | | | | 1,724 | | | | 3,769 | | | | - | | | | 28,811 | | | | | | 7,901 | | | | 655 | | | | 838 | | | | - | | | | 9,394 | | | | | | - | | | | - | | | | (1,564 | ) | | | - | | | | (1,564 | ) | Net earnings attributable to National Commerce Corporation | | $ | 15,417 | | | | 1,069 | | | | 1,367 | | | | - | | | | 17,853 | | | | | | | | | | | | | | | | | | | | | | | | Total assets as of December 31, 2016 | | $ | 1,903,602 | | | | 15,373 | | | | 105,812 | | | | (74,003 | ) | | | 1,950,784 | | | | | | | | | | | | | | | | | | | | | | | | For the Twelve Months Ended December 31, 2015 | | | | | | | | | | | | | | | | | | | | | | | | $ | 44,072 | | | | 385 | | | | 12,400 | | | | (2,012 | ) | | | 54,845 | | | | | | 4,670 | | | | 126 | | | | 2,012 | | | | (2,012 | ) | | | 4,796 | | | | | | 39,402 | | | | 259 | | | | 10,388 | | | | - | | | | 50,049 | | Provision for loan and lease losses | | | 1,158 | | | | - | | | | (45 | ) | | | - | | | | 1,113 | | | | | | 2,340 | | | | 6,070 | | | | 49 | | | | - | | | | 8,459 | | | | | | 29,741 | | | | 5,278 | | | | 5,226 | | | | - | | | | 40,245 | | Net earnings before tax and noncontrolling interest | | | 10,843 | | | | 1,051 | | | | 5,256 | | | | - | | | | 17,150 | | | | | | 3,866 | | | | 399 | | | | 1,211 | | | | - | | | | 5,476 | | | | | | - | | | | - | | | | (2,069 | ) | | | - | | | | (2,069 | ) | Net earnings attributable to National Commerce Corporation | | $ | 6,977 | | | | 652 | | | | 1,976 | | | | - | | | | 9,605 | | | | | | | | | | | | | | | | | | | | | | | | Total assets as of December 31, 2015 | | $ | 1,718,807 | | | | 15,020 | | | | 90,464 | | | | (60,922 | ) | | | 1,763,369 | | | | | | | | | | | | | | | | | | | | | | | | For the Twelve Months Ended December 31, 2014 | | | | | | | | | | | | | | | | | | | | | | | | $ | 27,144 | | | | 410 | | | | 4,345 | | | | (557 | ) | | | 31,342 | | | | | | 2,746 | | | | 123 | | | | 731 | | | | (731 | ) | | | 2,869 | | | | | | 24,398 | | | | 287 | | | | 3,614 | | | | 174 | | | | 28,473 | | Provision for loan and lease losses | | | 174 | | | | - | | | | 804 | | | | - | | | | 978 | | | | | | 811 | | | | 4,199 | | | | 22 | | | | - | | | | 5,032 | | | | | | 18,048 | | | | 3,681 | | | | 1,724 | | | | - | | | | 23,453 | | Net earnings before tax and noncontrolling interest | | | 6,987 | | | | 805 | | | | 1,108 | | | | 174 | | | | 9,074 | | | | | | 2,627 | | | | 306 | | | | 226 | | | | - | | | | 3,159 | | | | | | - | | | | - | | | | (512 | ) | | | - | | | | (512 | ) | Net earnings attributable to National Commerce Corporation | | $ | 4,360 | | | | 499 | | | | 370 | | | | 174 | | | | 5,403 | | | | | | | | | | | | | | | | | | | | | | | | Total assets as of December 31, 2014 | | $ | 1,099,191 | | | | 9,329 | | | | 105,330 | | | | (75,424 | ) | | | 1,138,426 | | | | | Noninterest income for the mortgage division segment includes intercompany income allocation. | | | | Entry to remove intercompany interest allocated to the receivables factoring segment. For segment reporting purposes, we allocate funding costs to the receivables factoring segment at the federal funds rate plus 2.50%. |
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