Computation of Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic and diluted earning/loss per share [Abstract]
Net income	$ 298,600	$ 1,355,300	$ 732,300	$ 2,107,500
Weighted average shares outstanding for the period (in shares)	1,566,699	1,543,257	1,566,699	1,543,257
Dilutive effect of warrants (in shares)	0	11,751	0	10,647
Weighted average diluted shares used in calculation of diluted earnings per share (in shares)	1,566,699	1,555,008	1,566,699	1,553,904
Basic earnings per share (in dollars per share)	$ 0.19	$ 0.88	$ 0.47	$ 1.37
Diluted earnings per share (in dollars per share)	$ 0.19	$ 0.87	$ 0.47	$ 1.36
Potentially outstanding shares was not included in the calculation of diluted loss per share (in shares)			0