Fair Value of Financial Instruments Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts	$ 1,861	$ 1,866
Deferred Compensation Liability, Current	(1,068)	(1,276)
Foreign currency forward contract	587
Foreign currency forward contracts		(169)
Contingent consideration liability	(419)	(390)
Total	961	31
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts	0	0
Deferred Compensation Liability, Current	0	0
Foreign currency forward contract	0
Foreign currency forward contracts		0
Contingent consideration liability	0	0
Total	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts	1,861	1,866
Deferred Compensation Liability, Current	(1,068)	(1,276)
Foreign currency forward contract	587
Foreign currency forward contracts		(169)
Contingent consideration liability	0	0
Total	1,380	421
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts	0	0
Deferred Compensation Liability, Current	0	0
Foreign currency forward contract	0
Foreign currency forward contracts		0
Contingent consideration liability	(419)	(390)
Total	$ (419)	$ (390)
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