| Accumulated Other Comprehensive Income (Tables) | 6 Months Ended | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun. 30, 2017 | |||||||||||||||||||||||||
| Equity [Abstract] | |||||||||||||||||||||||||
| Schedule of accumulated other comprehensive income | Accumulated other comprehensive loss consisted of the following: 
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| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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