Restructuring - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 25, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 102,500		$ 102,500		$ 102,500	$ 128,900
Restructuring costs		217,739		217,739
Facility Relocation One [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	13,500		13,500
Restructuring costs			283,900
Inventory [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	89,000		89,000		89,000	89,000
Restructuring costs