Income Taxes (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation between the statutory United States Federal income tax rate and the Company's effective income tax rate
Statutory rate	35.00%	35.00%
State taxes	0.90%	2.00%
Domestic production activities deduction	(2.20%)	(0.40%)
Noncontrolling interest in partially-owned subsidiaries	(1.20%)	0.00%
Other, net	0.00%	(0.30%)
Effective rate	32.50%	36.30%