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Summary of Significant Accounting Policies (Details 1) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Swedish Krona |  |  |
Weighted average exchange rate for consolidated statements of operations |  |  |
Weighted-average exchange rate for consolidated statements of operations | 8.43 | 6.86 | 6.51
Japanese Yen |  |  |
Weighted average exchange rate for consolidated statements of operations |  |  |
Weighted-average exchange rate for consolidated statements of operations | 121.03 | 105.84 | 97.58
South Korean Won |  |  |
Weighted average exchange rate for consolidated statements of operations |  |  |
Weighted-average exchange rate for consolidated statements of operations | 1,130.22 | 1,050.63 |
Taiwan Dollar |  |  |
Weighted average exchange rate for consolidated statements of operations |  |  |
Weighted-average exchange rate for consolidated statements of operations | 31.73 |  |

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