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CONCENTRATION OF RISK: (Tables) | 12 Months Ended
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Dec. 31, 2014
CONCENTRATION OF RISK: |
Schedule of concentration risk for cash equivalents and short- term investments | At December 31, 2014, SCC had invested its cash and cash equivalents and short-term investments as follows:
|  |  |  | % of total |  | % in one institution |
Country |  | $ in million |  | cash (1) |  | of country |  | of total cash |
United States |  | $ | 210.8 |  | 30.0 | % | 47.1 | % | 14.1 | %
Switzerland |  | 389.6 |  | 55.5 | % | 100.0 | % | 55.5 | %
Peru |  | 83.9 |  | 11.9 | % | 79.7 | % | 9.5 | %
Mexico |  | 18.3 |  | 2.6 | % | 62.4 | % | 1.6 | %
Total cash and short-term investment |  | $ | 702.6 |  | 100.0 | % |  |  |  |
| (1) |  | 97.2% of the Company’s cash is in U.S. dollars.
Schedule of company's largest customers as percentage of accounts receivable and total sales |
|  | 2014 |  | 2013 |  | 2012 |
Accounts receivable trade as of December 31, |  |  |  |  |  |  |
Five largest customers |  | 31.2 | % | 37.1 | % | 40.0 | %
Largest customer |  | 8.0 | % | 12.2 | % | 10.4 | %
Total sales in year |  |  |  |  |  |  |
Five largest customers |  | 34.3 | % | 28.7 | % | 28.8 | %
Largest customer |  | 8.2 | % | 8.4 | % | 7.4 | %

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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 + Details
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