XML 34 R32.htm IDEA: XBRL DOCUMENT

Changes in Warranty Liability (Detail) (USD $)	3 Months Ended
Changes in Warranty Liability (Detail) (USD $)	Mar. 31, 2013
Product Warranty [Line Items]
Warranty reserves at January 1	$ 345,974
Provisions for current period sales	119,115
Current year claims	(40,400)
Warranty reserves at March 31	$ 424,689

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References+ Details