Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Stock-based Compensation

Summary of stock option activity

	Six Months Ended June 30, 2018			Six Months Ended June 30, 2017
	Number Outstanding	Weighted Average Exercise Price		Number Outstanding	Weighted Average Exercise Price
Outstanding at beginning of period	537,500	$	2.19	540,625	$	2.18
Granted during period	-	-		-	-
Exercised during period	-	-		-	-
Forfeited or expired during period	-	-		-	-
Outstanding at end of period	537,500	$	2.19	540,625	$	2.18
Exercisable at end of period	267,500	$	2.71	180,625	$	3.29

Summary of options outstanding and exercisable

	Outstanding						Exercisable
Grant Date	Number Outstanding	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Aggregate Intrinsic Value		Number Outstanding	Weighted Average Exercise Price		Aggregate Intrinsic Value
January 21, 2009	7,500	0.56 years	$	4.00			7,500	$	4.00
March 18, 2009	75,000	0.71 years	$	4.98			75,000	$	4.98
January 21, 2010	5,000	1.56 years	$	6.00			5,000	$	6.00
February 24, 2016	450,000	7.65 years	$	1.62			180,000	$	1.62
	537,500	6.53 years	$	2.19	$	261,000	267,500	$	2.71	$	104,000