Organization and Summary of Significant Accounting Policies - Additional Information 2 (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Number of shares granted	0
Stock-based compensation	$ 63,400	$ 64,500
Unrecognized compensation costs related to non-vested stock options	566,400
Tax benefit from recording non-cash expense relates to options granted to employees	0
Shipping and handling costs	$ 631,600	346,800
Minimum
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Period over which compensation costs related to non-vested stock options recognize	12 months
Maximum
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Period over which compensation costs related to non-vested stock options recognize	60 months
General and Administrative Expense
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Stock-based compensation	$ 63,400	$ 64,500
One of Production Personnel
Schedule Of Organization And Presentation Of Financial Statements [Line Items]
Number of shares granted		3,000
Weighted average exercise price granted		$ 1.20
Options vesting period		48 months
Expiry of options		10 years