Summary of Significant Accounting Policies (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of Significant Accounting Policies [Abstract]
Percentage of total revenue (international)	52.30%	48.70%	52.70%
Restatement of Prior Year Income, Net of Tax		$ 4,851	$ 668
Impact of Restatement on Earnings Per Share, Diluted		$ 0.08	$ 0.02
Impact of Restatement on Opening Retained Earnings, Net of Tax		18,489	13,638	12,970
Prior Period Reclassification Adjustment		16,750	3,250
Advertising Expense	9,812	11,316	10,474
Research, development and engineering expense	92,315	85,881	78,108
Cash Equivalents, Maturity Period	3 months
Defined Benefit Plan, Period of Return for Fixed Income Investments From Discount Rate Assumptions	20 years
Defined Benefit Plan, Pensions, Threshold for Amortization of Unrecognized Net Gain (Loss) If Gain (Loss) exceeds Greater of Projected Benefit Obligation Or Market-Value of Plan Assets	5.00%
Financial self-service [Member]
Summary of Significant Accounting Policies [Abstract]
Service Contract Term	12 months
Software Solutions [Member]
Summary of Significant Accounting Policies [Abstract]
Service Contract Term	12 months
Cost of Goods, Product Line [Member]
Summary of Significant Accounting Policies [Abstract]
Restatement of Prior Year Income, Gross		$ 6,533	$ 5,455