Goodwill & Other Intangible Assets (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years 6 months
Amortization of Intangible Assets	$ 5,354,000	$ 4,598,000	$ 3,418,000