Federal and State Income Taxes Federal and State Income Taes (Tables)

3 Months Ended

Mar. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The reconciliations of income (loss) attributable to continuing operations at the U.S. federal statutory tax rate to income tax expense are as follows (in thousands):

	Three Months Ended March 31,
	2017			2016
Amount:
Federal statutory tax	$	44,368		$	21,846
Tax exempt revenue	(3,111		)	(2,532		)
Effect of state income taxes, net of federal benefit	2,445			2,301
Utilization of tax credits:
Low-income housing tax credit, net of amortization	(1,723		)	(1,310		)
Other tax credits	(364		)	(521		)
Bank-owned life insurance	(772		)	(791		)
Share-based compensation	(3,937		)	—
Other, net	1,197			2,435
Total income tax expense	$	38,103		$	21,428

	Three Months Ended March 31,
	2017		2016
Percent of pretax income:
Federal statutory tax	35.0	%	35.0	%
Tax exempt revenue	(2.4	)	(4.1	)
Effect of state income taxes, net of federal benefit	1.9		3.7
Utilization of tax credits:
Low-income housing tax credit, net of amortization	(1.4	)	(2.1	)
Other tax credits	(0.3	)	(0.8	)
Bank-owned life insurance	(0.6	)	(1.3	)
Share-based compensation	(3.1	)	—
Other, net	1.0		3.9
Total	30.1	%	34.3	%