XML 66 R53.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventories (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Inventories (Textual) [Abstract]    
Amounts (debited) credited to the allowance for obsolete inventory $ 102,000 $ 269,000
Items charged to the allowance for inventory write-offs $ 75,000 $ 116,000