Earnings Per Common Share - Details of Computation of Earnings per Common Share, Basic and Diluted (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator for basic per share calculation:
Income from continuing operations for basic calculation	$ 2,928,125	$ 914,538	$ 4,221,495	$ 1,961,518
Income (loss) from discontinued operations, net of income tax expense (benefit)	1,138,434	(92,739)	1,067,080	(470,617)
Net income for basic calculation	4,066,559	821,799	5,288,575	1,490,901
Numerator for diluted per share calculation:
Income from continuing operations	2,928,125	914,538	4,221,495	1,961,518
Adjustments to income from continuing operations for the statement of operations impact of dilutive securities	0	0	0	0
Income from continuing operations for dilution calculation	2,928,125	914,538	4,221,495	1,961,518
Income (loss) from discontinued operations, net of income tax expense (benefit)	1,138,434	(92,739)	1,067,080	(470,617)
Net income for dilution calculation	$ 4,066,559	$ 821,799	$ 5,288,575	$ 1,490,901
Denominator:
Weighted average common shares - basic	11,228,905	11,101,665	11,209,900	11,040,530
Effect of dilutive securities:
RSUs	125,413	124,134	134,028	163,397
Stock options	335,565	305,231	340,929	305,562
Weighted average common shares - diluted	11,689,883	11,531,030	11,684,857	11,509,489
Per common share amounts - basic:
Income from continuing operations	$ 0.26	$ 0.08	$ 0.38	$ 0.18
Income (loss) from discontinued operations	0.10	(0.01)	0.09	(0.04)
Net income	0.36	0.07	0.47	0.14
Per common share amounts - diluted:
Income from continuing operations	0.25	0.08	0.36	0.17
Income (loss) from discontinued operations	0.10	(0.01)	0.09	(0.04)
Net income	$ 0.35	$ 0.07	$ 0.45	$ 0.13