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Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Net interest revenue from external sources | $ 261,360 | $ 278,102 |
Net interest revenue (expense) from internal sources | 0 | 0 |
Net interest revenue | 261,360 | 278,102 |
Provision for credit losses | 93,771 | 8,000 |
Net interest revenue after provision for credit losses | 167,589 | 270,102 |
Other operating revenue | 180,319 | 157,270 |
Other operating expense | 268,624 | 287,157 |
Net direct contribution | 79,284 | 140,215 |
Gain (loss) on financial instruments, net | 0 | 0 |
Change in fair value of mortgage servicing rights | 0 | 0 |
Gain (loss) on repossessed assets, net | 0 | 0 |
Corporate expense allocations | 0 | 0 |
Net income before taxes | 79,284 | 140,215 |
Federal and state income taxes | 17,300 | 29,950 |
Net income | 61,984 | 110,265 |
Net income attributable to non-controlling interests | (95) | (347) |
Net income attributable to BOK Financial Corp. shareholders | 62,079 | 110,612 |
Average assets | 45,720,618 | 39,672,681 |
Operating Segments [Member] | Commercial [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest revenue from external sources | 201,902 | 204,209 |
Net interest revenue (expense) from internal sources | (50,495) | (53,638) |
Net interest revenue | 151,407 | 150,571 |
Provision for credit losses | 16,880 | 11,246 |
Net interest revenue after provision for credit losses | 134,527 | 139,325 |
Other operating revenue | 38,220 | 37,612 |
Other operating expense | 60,752 | 50,627 |
Net direct contribution | 111,995 | 126,310 |
Gain (loss) on financial instruments, net | 49 | 18 |
Change in fair value of mortgage servicing rights | 0 | 0 |
Gain (loss) on repossessed assets, net | 9 | (346) |
Corporate expense allocations | 8,905 | 9,455 |
Net income before taxes | 103,148 | 116,527 |
Federal and state income taxes | 28,173 | 31,006 |
Net income | 74,975 | 85,521 |
Net income attributable to non-controlling interests | 0 | 0 |
Net income attributable to BOK Financial Corp. shareholders | 74,975 | 85,521 |
Average assets | 24,687,976 | 19,937,878 |
Operating Segments [Member] | Consumer [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest revenue from external sources | 25,876 | 22,475 |
Net interest revenue (expense) from internal sources | 18,056 | 28,627 |
Net interest revenue | 43,932 | 51,102 |
Provision for credit losses | 1,256 | 1,085 |
Net interest revenue after provision for credit losses | 42,676 | 50,017 |
Other operating revenue | 55,062 | 42,748 |
Other operating expense | 54,793 | 53,821 |
Net direct contribution | 42,945 | 38,944 |
Gain (loss) on financial instruments, net | 86,764 | 14,097 |
Change in fair value of mortgage servicing rights | (88,480) | (20,666) |
Gain (loss) on repossessed assets, net | 13 | 103 |
Corporate expense allocations | 10,487 | 11,900 |
Net income before taxes | 30,755 | 20,578 |
Federal and state income taxes | 7,834 | 5,241 |
Net income | 22,921 | 15,337 |
Net income attributable to non-controlling interests | 0 | 0 |
Net income attributable to BOK Financial Corp. shareholders | 22,921 | 15,337 |
Average assets | 9,850,853 | 8,371,683 |
Operating Segments [Member] | Wealth Management [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest revenue from external sources | 14,366 | 21,486 |
Net interest revenue (expense) from internal sources | 4,538 | 6,770 |
Net interest revenue | 18,904 | 28,256 |
Provision for credit losses | (48) | (119) |
Net interest revenue after provision for credit losses | 18,952 | 28,375 |
Other operating revenue | 97,881 | 73,414 |
Other operating expense | 78,192 | 61,507 |
Net direct contribution | 38,641 | 40,282 |
Gain (loss) on financial instruments, net | 7 | 0 |
Change in fair value of mortgage servicing rights | 0 | 0 |
Gain (loss) on repossessed assets, net | 0 | 0 |
Corporate expense allocations | 8,265 | 8,360 |
Net income before taxes | 30,383 | 31,922 |
Federal and state income taxes | 7,810 | 8,203 |
Net income | 22,573 | 23,719 |
Net income attributable to non-controlling interests | 0 | 0 |
Net income attributable to BOK Financial Corp. shareholders | 22,573 | 23,719 |
Average assets | 12,723,412 | 9,328,986 |
Funds Management and Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest revenue from external sources | 19,216 | 29,932 | [1]
Net interest revenue (expense) from internal sources | 27,901 | 18,241 | [1]
Net interest revenue | 47,117 | 48,173 | [1]
Provision for credit losses | 75,683 | (4,212) | [1]
Net interest revenue after provision for credit losses | (28,566) | 52,385 | [1]
Other operating revenue | (10,844) | 3,496 | [1]
Other operating expense | 74,887 | 121,202 | [1]
Net direct contribution | (114,297) | (65,321) | [1]
Gain (loss) on financial instruments, net | (86,820) | (14,115) | [1]
Change in fair value of mortgage servicing rights | 88,480 | 20,666 | [1]
Gain (loss) on repossessed assets, net | (22) | 243 | [1]
Corporate expense allocations | (27,657) | (29,715) | [1]
Net income before taxes | (85,002) | (28,812) | [1]
Federal and state income taxes | (26,517) | (14,500) | [1]
Net income | (58,485) | (14,312) | [1]
Net income attributable to non-controlling interests | (95) | (347) | [1]
Net income attributable to BOK Financial Corp. shareholders | (58,390) | (13,965) | [1]
Average assets | $ (1,541,623) | $ 2,034,134 | [1]
[1] | 1 CoBiz operations are included in Funds Management and Other for the first quarter of 2019.

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