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Schedule II Valuation and Qualifying Accounts: | 12 Months Ended
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Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Schedule II – Valuation and Qualifying Accounts: The following is a summary of the allowance for doubtful accounts related to accounts receivable for the years ended December 31:
|  | 2011 |  | 2010 |
Balance at beginning of year |  | $ | 59,000 |  | $ | 57,000 |
Charged to expenses |  |  | 21,000 |  |  | 8,000 |
Uncollectible accounts written off |  |  | (10,000) |  |  | (6,000) |
Balance at end of year |  | $ | 70,000 |  | $ | 59,000 |
The following is a summary of the allowance for excess inventory for the years ended December 31:
|  | 2011 |  | 2010
Balance at beginning of year |  | $ | 376,000 |  | $ | 342,000
Charged to expenses |  |  | 8,000 |  |  | 42,000
Obsolete inventory written off |  |  |  |  |  | (8,000)
Balance at end of year |  | $ | 384,000 |  | $ | 376,000
The following is a summary of property and equipment and the related accounts of accumulated depreciation for the years ended December 31:
|  | 2011 |  | 2010
Cost Basis |  |  |  |  |  |
Balance at beginning of year |  | $ | 33,539,000 |  | $ | 32,088,000
Additions |  |  | 1,377,000 |  |  | 2,061,000
Disposals |  |  | - |  |  | -
Balance at end of year |  | $ | 34,916,000 |  | $ | 34,149,000
Accumulated depreciation |  |  |  |  |  |
Balance at beginning of year |  | $ | 24,486,000 |  | $ | 22,555,000
Depreciation |  |  | 1,586,000 |  |  | 1,935,000
Disposals |  |  | - |  |  | -
Balance at end of year |  | $ | 26,072,000 |  | $ | 24,490,000

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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