Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits interest and penalties accrued	$ 0
Net operating loss carryforwards	$ 52,170,000
Federal statutory rate	34.00%	34.00%	34.00%
Reduction of deferred taxes due to change in tax rate	$ 2,200,000
Net Operating Losses Expiring Beginning 2031 | Federal And Maryland
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	3,012,000
Net Operating Losses Expiring Before 2017 Ownership Change
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	2,800,000
Net Operating Losses Expiring Immediately
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	46,000,000
Net Operating Losses Available In 2017 After The Ownership Change
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	107,702
Net Operating Losses Available 2018
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 158,513