Quarterly report pursuant to Section 13 or 15(d)

Warranty (Details)

v2.4.0.8
Warranty (Details) (USD $)
9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Warranty [Abstract]    
Beginning Balance $ 590,000 $ 634,000
Amounts charged to expense 185,000 183,000
Actual warranty costs paid (191,000) (202,000)
Ending balance $ 584,000 $ 615,000
Product warranty period 5 years