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Foreign Revenues (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Frequency Control Devices - Significant Foreign Revenues: |  |
Total foreign revenues | $ 12,404 | $ 14,619
Portion of foreign sales (in hundredths) | 10.00% |
China [Member] |  |
Frequency Control Devices - Significant Foreign Revenues: |  |
Total foreign revenues | 3,504 | 3,802
Hong Kong [Member} |  |
Frequency Control Devices - Significant Foreign Revenues: |  |
Total foreign revenues | 1,448 | 0
Malaysia [Member] |  |
Frequency Control Devices - Significant Foreign Revenues: |  |
Total foreign revenues | 4,079 | 4,651
Thailand [Member] |  |
Frequency Control Devices - Significant Foreign Revenues: |  |
Total foreign revenues | 1,149 | 1,681
All other foreign countries [Member] |  |
Frequency Control Devices - Significant Foreign Revenues: |  |
Total foreign revenues | $ 2,224 | $ 4,485

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- Definition Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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