Operating Segments (Reconciliation Of Revenues) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]
Total consolidated net revenues	$ 11,550,492	$ 16,630,408	$ 13,885,992	$ 10,393,311	$ 10,802,370	$ 16,731,568	$ 14,848,077	$ 9,881,038	$ 52,460,203	$ 52,263,053
Reportable Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total consolidated net revenues									54,572,000	54,410,000
Elimination Of Intersegment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total consolidated net revenues									$ (2,112,000)	$ (2,147,000)