Subsequent Events (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Mar. 06, 2013
Subsequent Events (Textual) [Abstract]
Earnout Payment Throughout Period	Dec. 31, 2017
Increase in quarterly dividend	11.00%
Dividend paid		$ 0.05
Previous dividend paid		$ 0.045
Dividend payment date	Mar. 28, 2013
Dividend payment record date	Mar. 18, 2013
Subsequent Event [Member] | Aarding [Member]
Subsequent Events (Textual) [Abstract]
Net cash paid	24.0
Earnout Payments Based On Gross Profit	7.2
Subsequent Event [Member] | Restricted Stock [Member] | Aarding [Member]
Subsequent Events (Textual) [Abstract]
Restricted common stock	763,673