Computation of Earnings Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Basic and diluted earnings per share [Abstract]
Net income	$ 1,221,700	$ 6,437,600
Weighted average shares outstanding for the period (in shares)	1,566,699	1,544,285
Dilutive effect of warrants (in shares)	0	0
Weighted average diluted shares used in calculation of diluted earnings per share (in shares)	1,566,699	1,544,285
Basic earnings per share (in dollars per share)	$ 0.78	$ 4.17
Diluted earnings per share (in dollars per share)	$ 0.78	$ 4.17
Common stock issued to warrant holders (in shares)	23,442