Acquisitions (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 31, 2012 Racine Federated, Inc. [Member]	Jun. 30, 2012 Racine Federated, Inc. [Member]	May 23, 2012 Racine Federated, Inc. [Member]	Jan. 31, 2012 Racine Federated, Inc. [Member]	May 23, 2012 Racine Federated, Inc. [Member] Maximum [Member]	May 23, 2012 Racine Federated, Inc. [Member] Minimum [Member]	Jan. 26, 2011 Remag, AG [Member]
Business Acquisition (Textual) [Abstract]
Acquisition of outstanding common stock				100.00%
Cash				$ 57.3			$ 0.9
Estimated adjustment in working capital				0.3
Other long-term liabilities		4.6
Expansion of line of credit					125.0	90.0
Reduction in line of credit		16.7
Stock repurchase program	30.0
Issuance of commercial paper			70.0
Estimated useful life of intangible assets		15 years
Acquisition of Remag, AG							4.9
Receivables							0.4
Inventory							0.4
Property, plant and equipment							2.0
Intangibles							1.8
Goodwill							0.2
Net other assets and liabilities							$ 0.1