Income Taxes

3 Months Ended

Mar. 31, 2013

Income Taxes [Abstract]

Income Taxes

10.           INCOME TAXES

A reconciliation of the U.S. federal statutory rate to our effective tax rate is as follows:

	For the Three Months Ended March 31,
	2013			2012
U.S. federal statutory rate		35.0	%		35.0	%
State income taxes		1.4	%		1.4	%
Changes in reserve for uncertain tax positions as a result of settlements and lapsed statutes and related interest		-0.3	%		-0.4	%
Other		0.2	%		0.1	%
Effective tax rate		36.3	%		36.1	%

The differences between the U.S. federal statutory rate and our effective tax rate are primarily due to state income taxes and reserves for uncertain tax positions and related interest that are included in the provision for income taxes.