Information Services Contracts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Service Contracts [Line Items]
Information service contract payments	$ 12,647	$ 13,221	$ 13,038
Service Contracts [Member]
Service Contracts [Line Items]
2014	8,350
2015	7,384
2016	7,446
2017	7,508
2018	0
Thereafter	0
Total	$ 30,688