Income Taxes (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Uncertain income tax positions
Interest expense recorded	$ 0	$ 0	$ 0
Liability for uncertain income tax matters	0	0
State and Local Jurisdiction
Operating loss carryforwards
Net operating loss carryforwards	218,307,000
Increase (decrease) in valuation allowances	$ 44,000	$ 1,805,000	$ (24,000)