Acquisition, Goodwill Impairment and Long-lived Asset Impairment (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Jun. 30, 2012 Maximum [Member]	Jun. 30, 2012 Nanda [Member]	Nov. 21, 2011 Nanda [Member]
Acquisition Goodwill Impairment and Long Lived Asset Impairment (Textual) [Abstract]
Preliminary purchase price allocation period				1 year
Acquired percentage of the outstanding shares of Nanda Technologies GmbH						100.00%
Net purchase price in cash						$ 24.6
Goodwill acquired					10.8
Acquisition Goodwill Impairment and Long Lived Asset Impairment (Additional Textual) [Abstract]
Reduction in fair value of royalty payments		0.6	0.6
Reduction in fair value of goodwill	0.5	0.4	0.4
Reduction in fair value of intangible assets		0.2	0.2
Proceeds from escrow	$ 0.5