Earnings Per Common Share - Details of Computation of Earnings per Common Share, Basic and Diluted (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator for basic per share calculation:
Income from continuing operations for basic calculation	$ 1,604,125	$ 1,293,370
Income (loss) from discontinued operations, net of income tax (benefit)		(71,354)
Net income for basic calculation	1,604,125	1,222,016
Numerator for diluted per share calculation:
Income from continuing operations	1,604,125	1,293,370
Adjustments to income from continuing operations for the impact of dilutive securities	0	0
Income from continuing operations for dilution calculation	1,604,125	1,293,370
Income (loss) from discontinued operations, net of income tax (benefit)		(71,354)
Net income for dilution calculation	$ 1,604,125	$ 1,222,016
Denominator:
Weighted average common shares - basic	11,283,752	11,190,683
Effect of dilutive securities:
RSUs	133,498	155,677
Stock options	308,556	346,204
Weighted average common shares - diluted	11,725,806	11,692,564
Per common share amounts - basic:
Income from continuing operations	$ 0.14	$ 0.12
Income (loss) from discontinued operations		(0.01)
Net income	0.14	0.11
Per common share amounts - diluted:
Income from continuing operations	0.14	0.11
Income (loss) from discontinued operations		(0.01)
Net income	$ 0.14	$ 0.10