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Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Significant Accounting Policies [Abstract] |  |
Equity and Noncontrolling interest | 20.00% |
Issuance of noncontrolling interest in ZBC (Note2) |  | $ 10
Allowance for uncollectible accounts receivable | 1,837 | 1,837
Inventory finished goods | 5,120 | 6,042
Inventory parts | 310 | 533
Inventory supplies | 850 | 766
Write-off of field inventory | 1,340 |
Reserve for obsolete and damaged inventory | 1,278 | 1,181
Open purchase commitments | 1,000 |
Impairment of goodwill | 251 |
Impairment of intangible assets | 160 |
Advertising expense | 115 | 95
Research and development expense | 754 | 874
Company accrued unrecognized tax benefits, penalties and interest | 194 | 67
NeuroDyne |  |
Significant Accounting Policies [Abstract] |  |
Impairment of goodwill | 251 |
Impairment of intangible assets | $ 160 |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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