Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 0.4	$ 0.3	$ 0.9	$ 0.6
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			1 year
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life			10 years
Discera, Inc. [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			2.8
PhaseLink Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			8.3
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			$ 2.1