Stock-Based Compensation Arrangements (Stock-Based Compensation) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stock-based compensation expense	$ 109,642	$ 24,325	$ 354,441	$ 84,608
Stock option grants beginning of period [Member]
Stock-based compensation expense	108,363	19,532	348,545	71,497
Stock option grants [Member]
Stock-based compensation expense	0	3,061	1,166	9,170
Employee Stock Purchase Plan [Member]
Stock-based compensation expense	$ 1,279	$ 1,732	$ 4,730	$ 3,941