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Supplementary Balance Sheet Information (Details 1) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Accounts receivable other: |  |
Accounts receivable other | $ 560 | $ 843
Government [Member] |  |
Accounts receivable other: |  |
Accounts receivable other | 227 | 659
Employees [Member] |  |
Accounts receivable other: |  |
Accounts receivable other | 19 | 25
Sundry [Member] |  |
Accounts receivable other: |  |
Accounts receivable other | $ 314 | $ 159

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- Definition The sum of amounts currently receivable other than from customers. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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