Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Mar. 31, 2011 Accounting Standards Update 2009-13 [Member]	Dec. 31, 2011 Russia Entity [Member]
Adoption of new accounting pronouncement, increase in revenue				$ 2,400,000
Adoption of new accounting pronouncement, increase in operating income				900,000
Interest in foreign subsidiaries					50.00%
Capitalized salaries, travel, and consulting costs related to software development	2,300,000	4,200,000
Rate of return on life insurance policies			5.20%
Cash received from life insurance policy terminations		$ 49,302,000	$ 2,272,000