Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Additional Cash Flow Information

Additional cash flow information was as follows:

	Three Months Ended   March 31,
	2020		2019
Cash paid for interest	$	23,168	$	34,402
Cash paid for income taxes	—		—
Significant non-cash transactions:
Unsettled securities transactions	11,196		7,612
Right-of-use lease assets obtained in exchange for lessee operating lease liabilities	9,892		170,479

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

The following table details the impact of the adoption of ASC 326 on the allowance for credit losses as of January 1, 2020.

	January 1, 2020
	Pre-Adoption Allowance		Impact of Adoption			Post-Adoption Allowance		Cumulative Effect on Retained Earnings
Securities held to maturity:
U.S. Treasury	$	—	$	—		$	—	$	—
Residential mortgage-backed securities	—		—			—		—
States and political subdivisions	—		215			215		(170		)
Other	—		—			—		—
Total	$	—	$	215		$	215	$	(170	)
Loans:
Commercial and industrial	$	51,593	$	21,263		$	72,856	$	(16,798	)
Energy	37,382		(10,453		)	26,929		8,258
Commercial real estate	31,037		(13,519		)	17,518		10,680
Consumer real estate	4,113		2,392			6,505		(1,890		)
Consumer and other	8,042		(2,248		)	5,794		1,776
Total	$	132,167	$	(2,565	)	$	129,602	$	2,026
Off-balance-sheet credit exposures	$	500	$	39,377		$	39,877	$	(31,108	)