Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Property and Equipment
Accumulated depreciation	$ 51,963,000	$ 51,963,000	$ 49,083,000
Depreciation expense	655,000	1,384,000
Expected depreciation expense	2,216,000	2,216,000
State and Local Jurisdiction
Operating loss carryforwards
Valuation allowance for deferred tax assets	$ 10,374,000	10,374,000
Decrease in valuation allowances		$ 30,000