Summary of Significant Accounting Policies - Summary of Accounts Receivable Allowance Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010
Accounting Policies [Abstract]
Balance at beginning of year	$ 100,000	$ 100,000	$ 100,000
Additions	12,174
Deductions
Balance at end of year	$ 112,174	$ 100,000	$ 100,000