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SUPPLEMENTARY BALANCE SHEET INFORMATION (Details 1) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Balance at beginning of year | $ 308 | [1] | $ 435 |  | $ 664
Increase (decrease) during the year | 66 |  | (15) |  | (201)
Bad debt written off | (47) |  | (112) |  | (28)
Balance at end of year | $ 327 | [1] | $ 308 | [1] | $ 435
[1] | The changes in allowance for doubtful accounts are composed as follows: Years ended December 31, 2012 2011 2010 U.S. dollars in thousands Balance at beginning of year $ 308 $ 435 $ 664 Increase (decrease) during the year 66 (15 ) (201 ) Bad debt written off (47 ) (112 ) (28 ) Balance at end of year $ 327 $ 308 $ 435

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- Definition Amount of direct write-downs of receivables charged against the allowance for doubtful accounts. + References No definition available. + Details
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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of increase (decrease) in the allowance for doubtful accounts. + References No definition available. + Details
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