Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes (Textual) [Abstract]
Excess tax benefit obtained by the company	$ 1.0	$ 1.0	$ 1.0
Company's federal net operating losses for tax return purposes	12.3
Federal net operating losses carry forwards expiry date	Begin to expire in 2031
Likelihood percentage of being realized upon ultimate settlement with the relevant tax authority	50.00%
Unrecognized tax benefits	0	0
Changes in unrecognized benefits	0	0	0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
State and foreign tax credit carry forwards	$ 6.8
State and foreign tax credit carry forwards expiry date	Begin to expire in 2020