Other Income (Expenses) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Income Net [Line Items]
Other	$ 35,136	$ 93,819	$ 114,623
Government subsidies
Other Income Net [Line Items]
Other	80,734	95,128	0
Gain on sale of scraps
Other Income Net [Line Items]
Other	0	0	13,520
Other
Other Income Net [Line Items]
Other	$ (45,598)	$ (1,309)	$ 101,103