Other Borrowings Other Borrowings (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Other Borrowings [Table Text Block]

Information relating to other borrowings is summarized as follows (dollars in thousands):



	As of				Year Ended
	December 31, 2018				December 31, 2018
	Balance		Rate		Average Balance		Rate		Maximum Outstanding At Any Month End
Parent company and other non-bank subsidiaries:
Other borrowings	$	5,207	1.57	%	$	2,660	1.35	%	$	5,335
Subordinated debentures	275,913		5.34	%	177,884		5.52	%	275,913
Total parent company and other non-bank subsidiaries	281,120				180,544		5.46	%

Subsidiary banks:
Funds purchased	402,450		2.34	%	419,322		1.89	%	949,531
Repurchase agreements	615,961		0.36	%	464,582		0.28	%	615,961
Other borrowings:
Federal Home Loan Bank advances	6,100,000		2.65	%	6,207,142		2.06	%	6,500,000
GNMA repurchase liability	15,552		4.43	%	14,783		4.47	%	16,529
Other	3,631		4.80	%	11,856		4.45	%	15,096
Total other borrowings	6,119,183				6,233,781		2.07	%
Subordinated debentures	—		—	%	—		—	%	—
Total Subsidiary banks	7,137,594				7,117,685		1.94	%

Total other borrowed funds	$	7,418,714			$	7,298,229	2.03	%



	As of				Year Ended
	December 31, 2017				December 31, 2017
	Balance		Rate		Average Balance		Rate		Maximum Outstanding At Any Month End
Parent company and other non-bank subsidiaries:
Other borrowings	$	—	—	%	$	935	11.11	%	$	3,104
Subordinated debentures	144,677		5.60	%	147,954		5.57	%	151,875
Total parent company and other non-bank subsidiaries	144,677				148,889		5.65	%

Subsidiary banks:
Funds purchased	58,628		1.00	%	58,064		0.73	%	80,967
Repurchase agreements	516,335		0.17	%	433,791		0.10	%	536,094
Other borrowings:
Federal Home Loan Bank advances	5,100,000		1.47	%	5,882,466		1.13	%	6,200,000
GNMA repurchase liability	19,947		4.22	%	20,509		4.59	%	24,139
Other	14,950		2.61	%	15,382		2.38	%	15,506
Total other borrowings	5,134,897				5,918,357		1.14	%
Subordinated debentures	—		—	%	—		—	%	—
Total Subsidiary banks	5,709,860				6,410,212		1.07	%

Total other borrowed funds	$	5,854,537			$	6,559,101	1.18	%



	As of				Year Ended
	December 31, 2016				December 31, 2016
	Balance		Rate		Average Balance		Rate		Maximum Outstanding At Any Month End
Parent company and other non-bank subsidiaries:
Other borrowings	$	1,092	8.27	%	$	2,073	16.11	%	$	3,157
Subordinated debentures	151,857		5.49	%	75,039		5.57	%	151,857
Total parent company and other non-bank subsidiaries	152,949				77,112		5.86	%

Subsidiary banks:
Funds purchased	57,929		0.38	%	78,222		0.24	%	567,103
Repurchase agreements	668,661		0.02	%	589,145		0.04	%	668,661
Other borrowings:
Federal Home Loan Bank advances	4,800,000		0.72	%	5,985,656		0.55	%	6,500,000
GNMA repurchase liability	22,471		4.26	%	15,637		4.74	%	22,471
Other	15,292		2.66	%	15,670		2.41	%	15,797
Total other borrowings	4,837,763				6,016,963		0.57	%
Subordinated debentures	—		—	%	140,414		1.35	%	226,434
Total Subsidiary banks	5,564,353				6,824,744		0.54	%

Total other borrowed funds	$	5,717,302			$	6,901,856	0.60	%

Schedule of Maturities of Other Borrowings [Table Text Block]

Aggregate annual principal repayments at December 31, 2018 are as follows (in thousands):



	Parent Company and Other Non-bank Subsidiaries		Subsidiary Banks
2019	$	—	$	7,134,538
2020	—		575
2021	—		575
2022	—		575
2023	—		625
Thereafter	281,120		706
Total	$	281,120	$	7,137,594

Schedule of Repurchase Agreements [Table Text Block]

Additional information relating to securities sold under agreements to repurchase and related liabilities at December 31, 2018 and 2017 is as follows (dollars in thousands):



	December 31, 2018
	Amortized		Fair		Repurchase		Average
Security Sold/Maturity	Cost		Value		Liability¹		Rate

U.S. government agency mortgage-backed securities:
Overnight¹	$	636,864	$	628,229	$	615,961	0.36	%
Long-term	—		—		—		—	%
Total Agency Securities	$	636,864	$	628,229	$	615,961	0.36	%

	December 31, 2017
	Amortized		Fair		Repurchase		Average
Security Sold/Maturity	Cost		Value		Liability¹		Rate

U.S. government agency mortgage-backed securities:
Overnight¹	$	525,452	$	523,914	$	516,335	0.17	%
Long-term	—		—		—		—	%
Total Agency Securities	$	525,452	$	523,914	$	516,335	0.17	%


¹	BOK Financial maintains control over the securities underlying overnight repurchase agreements and generally transfers control over securities underlying longer-term dealer repurchase agreements to the respective counterparty.