Restructuring Activities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		15 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring cost		$ 199	$ 7,300
Summary of restructuring activities
Beginning balance	1,113	2,578
Restructuring charges	26	1,101
Cash payments and other	(590)	(957)
Ending balance	549	2,722
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring cost		902
Energy & Chemicals [Member]
Summary of restructuring activities
Beginning balance	0	103
Restructuring charges	0	0
Cash payments and other	0	(39)
Ending balance	0	64
Distribution & Storage [Member]
Summary of restructuring activities
Beginning balance	115	387
Restructuring charges	0	(1)
Cash payments and other	(73)	(128)
Ending balance	42	258
BioMedical [Member]
Summary of restructuring activities
Beginning balance	998	2,088
Restructuring charges	26	1,102
Cash payments and other	(517)	(790)
Ending balance	507	2,400
Corporate [Member]
Summary of restructuring activities
Beginning balance	0	0
Restructuring charges	0	0
Cash payments and other	0	0
Ending balance	0	0
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring cost		11
Selling, general and administrative expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring cost		1,090
Selling, general and administrative expense [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring cost	$ 26