2.4.0.8090400 - Disclosure - Inventories (Details)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$c20130630http://www.sec.gov/CIK0000872912instant2013-06-30T00:00:000001-01-01T00:00:00U002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$c20121231http://www.sec.gov/CIK0000872912instant2012-12-31T00:00:000001-01-01T00:00:00U002Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 1us-gaap_InventoryDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Inventories [Abstract]2false 2us-gaap_InventoryRawMaterialsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse232000232USD$falsetruefalse2truefalsefalse197000197USD$falsetruefalsexbrli:monetaryItemTypemonetaryGross amount of unprocessed items to be consumed in the manufacturing or production process. Also includes purchased parts that will be used as components of a finished product.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 false2Raw materials3false 2us-gaap_InventoryWorkInProcessus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse758000758falsefalsefalse2truefalsefalse405000405falsefalsefalsexbrli:monetaryItemTypemonetaryGross amount of merchandise or goods which are partially completed, are generally comprised of raw materials, labor and factory overhead costs, and which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 false2Work-in-process4false 2us-gaap_InventoryFinishedGoodsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse267000267falsefalsefalse2truefalsefalse503000503falsefalsefalsexbrli:monetaryItemTypemonetaryAmount before last-in first-out (LIFO) and valuation reserves of merchandise or goods held by the entity that are readily available for sale.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 false2Finished goods5false 2us-gaap_InventoryGrossus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse12570001257falsefalsefalse2truefalsefalse11050001105falsefalsefalsexbrli:monetaryItemTypemonetaryGross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 true2Total inventory, gross6false 2us-gaap_InventoryAdjustmentsus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedTerseLabel1truefalsefalse-332000-332falsefalsefalse2truefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCertain changes made in the current period to the value and amount of inventory reported.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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