Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Income Taxes (Textual) [Abstract]
Tax credit carryforwards	$ 2.5
Period of Increase in Ownership Percentage	3 years
Domestic Tax Authority [Member]
Income Taxes (Textual) [Abstract]
Net operating loss carryforward	57.0
Expired state net operating losses	4.8
State and Local Jurisdiction [Member]
Income Taxes (Textual) [Abstract]
Net operating loss carryforward	12.1
Federal and state net operating loss carryforwards	$ 42.6
Federal net operating loss carryforwards expiry date	$42.6 million will expire in 2022 and 2023