Fair Value of Financial Instruments Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified									6 Months Ended
	Jun. 30, 2014 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]	Jun. 30, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member]	Jun. 30, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]	Jun. 30, 2014 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]	Jun. 30, 2014 Continuous Computing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Measurement Period After Close Date									36 months
Cash surrender value of life insurance contracts	$ 1,873	$ 1,866	$ 0	$ 0	$ 1,873	$ 1,866	$ 0	$ 0
Deferred Compensation Liability, Current	(1,084)	(1,276)	0	0	(1,084)	(1,276)	0	0
Foreign currency forward contract	662		0		662		0
Foreign currency forward contracts		(169)		0		(169)		0
Contingent consideration liability	(302)	(390)	0	0	0	0	(302)	(390)
Total	$ 1,149	$ 31	$ 0	$ 0	$ 1,451	$ 421	$ (302)	$ (390)