Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Statutory tax rate	35.00%	35.00%	35.00%
State taxes, net of federal tax benefit	6.40%	4.40%	8.70%
Valuation allowance	(9.50%)	(2.30%)	(6.80%)
Foreign income taxes	0.10%	0.00%	2.40%
Goodwill	(0.40%)	(1.40%)	0.10%
Stock based compensation	(0.20%)	(0.20%)	0.00%
Officers’ life insurance/insurance proceeds	0.00%	0.10%	(0.30%)
Acquisition and integration costs	0.10%	(0.20%)	0.00%
Reserves for uncertain tax positions	0.00%	3.10%	(0.20%)
Deferred tax liability adjustment	0.00%	0.00%	3.30%
Capital loss tax benefit	4.00%	0.00%	0.00%
CGP LLC transaction deferred tax adjustment	(0.80%)	0.00%	0.00%
Other	0.00%	0.00%	0.00%
Effective tax rate	34.70%	38.50%	42.20%