Summary Of Significant Accounting Policies (Computation Of Basic And Diluted EPS) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Summary Of Significant Accounting Policies [Abstract]
Net earnings (loss)	$ (177,299)	$ (2,333,116)	$ 999,669	$ (4,607,417)
Cumulative dividend on convertible preferred stock	(369,661)		(732,849)
Net income attributable to convertible preferred stock			(167,539)
Earnings (net loss) attributable to common stockholders	$ (546,960)	$ (2,333,116)	$ 99,281	$ (4,607,417)
Shares used for basic EPS-weighted average shares	22,581,330	21,793,583	22,450,392	21,702,597
Effect of diluted securities: Restricted stock units			8,087
Weighted average shares used in computing earnings (net loss) per share	22,581,330	21,793,583	22,458,479	21,702,597
Basic EPS	$ (0.02)	$ (0.11)	$ 0.00	$ (0.21)
Diluted EPS	$ (0.02)	$ (0.11)	$ 0.00	$ (0.21)