Acquisition (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	6 Months Ended
	Jan. 31, 2012	Jun. 30, 2013
Business Combinations (Textual) [Abstract]
Maximum amount available under credit facility	$ 105
TaxACT
Business Combinations (Textual) [Abstract]
Date of acquisition		Jan. 31, 2012
Cash paid for acquisition	287.5
Maximum amount available under credit facility	105
Credit facility drawn	100
Goodwill		$ 185.5