Business Combinations Contingent Consideration (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability		$ 88		$ (5,077)
Payment of Contingent Consideration			0	(1,300)
Distribution & Storage [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability		15		459
Payment of Contingent Consideration				(1,300)
BioMedical [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Acquisition, Contingent Consideration, Potential Cash Payment	2,206		2,206		1,990
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability	81	73	216	(4,236)
Maximum [Member] | BioMedical [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Business Acquisition, Contingent Consideration, Potential Cash Payment	$ 3,000		$ 3,000