Goodwill and Intangible Assets (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	$ 31,319
Weighted Average Amortization Period	6 years
Finite Lived Intangible Assets Amortization Expenses	$ 18,908	$ 26,575	$ 21,997
Other Intangible Assets [Member]
Goodwill [Line Items]
Weighted Average Amortization Period	8 years
Customer Relationships [Member]
Goodwill [Line Items]
Weighted Average Amortization Period	5 years