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Segment Revenues (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Total Revenues | $ 130,550,000 | $ 124,574,000
United States |  |
Total Revenues | 114,231,000 | 109,823,000
Canada |  |
Total Revenues | 6,935,000 | 6,824,000
Europe |  |
Total Revenues | 8,208,000 | 6,957,000
Other International |  |
Total Revenues | 1,176,000 | 970,000
Total International |  |
Total Revenues | $ 16,319,000 | $ 14,751,000

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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