Restructuring Expenses (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Feb. 29, 2012	Mar. 31, 2013
Restructuring Expenses (Additional Textual) [Abstract]
Annualized savings	$ 7.0
One-time employee termination and other costs		$ 0.3
Maximum [Member]
Restructuring Expenses (Textual) [Abstract]
Percentage of reduction of headcount	8.00%
Minimum [Member]
Restructuring Expenses (Textual) [Abstract]
Percentage of reduction of headcount	7.00%