Components of Income Tax Expense (Detail) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 400,931	$ 448,832	$ 720,259
State	197,671	186,616	261,679
Total current	598,602	635,448	981,938
Deferred income taxes (benefits):
Federal	(9,542)	(5,130)	(156,652)
State	44,795	43,489	(57,876)
Total deferred taxes (benefits)	35,252	38,359	(214,529)
Income tax expense	$ 633,855	$ 673,807	$ 767,410

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.