Summary of Significant Accounting Policies and Basis of Presentation Description of Business (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 Segment country	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010
Cash and Cash Equivalents [Line Items]
Change in accounting principle, effect on net earnings		$ 400,000
Change in accounting principle, effect on basic and diluted earnings per common share		$ 0.02
Cash and cash equivalents	43,700,000	20,337,000	37,806,000	18,448,000
Number of countries in which services are provided to clients	40
Change in accounting principle, effect on revenue		1,400,000
Short-term investments	24,600,000		25,100,000
Number of operating segments	3
Foreign banks [Member]
Cash and Cash Equivalents [Line Items]
Short-term investments	4,400,000		1,600,000
United States [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	22,400,000
Canada [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	9,100,000
Other Foreign Jurisdictions [Member]
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 12,200,000