Business Combinations Contingent Consideration (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Combination, Contingent Consideration, Liability, Beginning Balance			$ 2,289
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability	63	81	187	216
Payment of contingent consideration			(741)	0
Business Combination, Contingent Consideration, Liability, Ending Balance	1,735		1,735
Maximum [Member]
Business Acquisition, Contingent Consideration, Potential Cash Payment	$ 2,259		$ 2,259