Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes (Textual) [Abstract]
Federal net operating loss carry forwards	$ 64.8
Percentage of cumulative ownership	50.00%
Cumulative ownership change period	3 years
Unremitted earnings of subsidiaries outside the United States	$ 30.4
Effective income tax rate	39.10%	38.90%	41.20%
Number of years under state audit	4 years