Fair Value Measurements - Fair Value Hierarchy of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
ASSETS
Common stock	$ 403,884	$ 406,134
LIABILITIES
Contingent consideration	685,000	685,000
Level 1 [Member]
ASSETS
Common stock	403,884	406,134
LIABILITIES
Contingent consideration
Level 2 [Member]
ASSETS
Common stock
LIABILITIES
Contingent consideration
Level 3 [Member]
ASSETS
Common stock
LIABILITIES
Contingent consideration	$ 685,000	$ 685,000