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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Depreciation of Property, Plant and Equipment | Property, plant and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated on the straight-line basis over the estimated useful life of the assets at the following annual rates:
|  | %
Machinery and equipment | 15 - 33
Office furniture and equipment | 6 - 33
Leasehold improvements | *
* Over the shorter term of the lease or the useful life of the asset
Schedule of Effects of New Standard on Consolidated Balance Sheet | Effects of the initial application of the new standard on the Company's consolidated balance sheet as of January 1, 2019:
|  | According to the previous accounting policy |  |  | The change |  |  | As presented according to Topic 842 |
|  |  |  |  | US$ thousands |  |  |  |
Operating leases right-of-use |  |  | - |  |  |  | 3,424 |  |  |  | 3,424 |
Prepaid expenses |  |  | 90 |  |  |  | (90 | ) |  |  | - |
Operating lease liabilities |  |  | - |  |  |  | (3,334 | ) |  |  | (3,334 | )
Computation of Basic and Diluted Income Per Ordinary Share | The following table summarizes information related to the computation of basic and diluted income per ordinary share for the years indicated.
|  | Year ended December 31 |
|  | 2017 |  |  | 2018 |  |  | 2019 |
Net income attributable to ordinary shares |  |  |  |  |  |  |  |  |
(US$ thousands) |  |  | 21,714 |  |  |  | 14,637 |  |  |  | 10,236 |
Weighted average number of ordinary shares outstanding |  |  |  |  |  |  |  |  |  |  |  |
used in basic income per ordinary share calculation |  |  | 7,455,528 |  |  |  | 7,552,094 |  |  |  | 7,520,389 |
Add assumed exercise of outstanding dilutive potential |  |  |  |  |  |  |  |  |  |  |  |
ordinary shares |  |  | 146,443 |  |  |  | 105,236 |  |  |  | 52,228 |
Weighted average number of ordinary shares outstanding |  |  |  |  |  |  |  |  |  |  |  |
used in diluted income per ordinary share calculation |  |  | 7,601,971 |  |  |  | 7,657,330 |  |  |  | 7,572,617 |
Basic income per ordinary shares (US$) |  |  | 2.912 |  |  |  | 1.938 |  |  |  | 1.361 |
Diluted income per ordinary shares (US$) |  |  | 2.856 |  |  |  | 1.912 |  |  |  | 1.352 |
Weighted average number of shares related to options |  |  |  |  |  |  |  |  |  |  |  |
and RSUs excluded from the diluted earnings per share |  |  |  |  |  |  |  |  |  |  |  |
calculation because of anti-dilutive effect |  |  | - |  |  |  | 171,086 |  |  |  | 351,610 |

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