Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Intangible Assets [Abstract]
Trademarks	$ 778		$ 778		$ 778
Customer intangible assets	68,991		68,991		68,991
Other	1,274		1,274		1,481
Accumulated amortization	(17,840)		(17,840)		(15,785)
Intangible assets, net	53,203		53,203		55,465
Amortization expense on intangible assets	1,131	1,162	2,262	2,323
Trademarks [Member]
Intangible Assets [Abstract]
Accumulated amortization	(577)		(577)		(475)
Customer Intangible Assets [Member]
Intangible Assets [Abstract]
Accumulated amortization	(16,635)		(16,635)		(14,555)
Other [Member]
Intangible Assets [Abstract]
Accumulated amortization	$ (628)		$ (628)		$ (755)