Income Taxes (Tables)

9 Months Ended

Sep. 30, 2017

Income Taxes [Abstract]

Reconciliation Of Provision For Income Taxes

	For the three months ended				For the nine months ended
	September 30,				September 30,
	2017		2016		2017		2016
Consolidated tax provision at federal statutory rate	35.0	%	35.0	%	35.0	%	35.0	%
State income tax provisions, net of federal income
tax benefit	2.8		4.2		1.7		4.3
Tax reserve adjustment	(1.0)		6.3		(0.2)		0.7
Domestic production activities deduction	-		(9.5)		-		(2.4)
Changes in certain deferred tax balances	7.1		(0.8)		0.2		3.1
Goodwill impairment	-		-		(10.2)		-
Shared-based payments	0.1		-		(0.2)		-
Federal research and development tax credit	1.5		1.5		0.3		1.2
All other, net	0.1		-		(0.1)		0.1
Effective tax rate	45.6	%	36.7	%	26.5	%	42.0	%