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Inventories (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Inventories [Abstract]
Current materials and supplies to be consumed in production process or rendering services	$ 347,100	$ 333,194
Cost of inventories recognised as expense during period	105,282,000	96,284,000
Cost of sales	$ 1,483,524,000	$ 1,394,822,000	$ 1,328,285,000

X

- Definition

The amount of inventories recognised as an expense during the period. [Refer: Inventories]

+ References

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X

- Definition

The amount of costs relating to expenses directly or indirectly attributed to the goods or services sold, which may include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, unallocated production overheads and abnormal amounts of production costs of inventories.

+ References

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X

- Definition

A classification of current inventory representing the amount of materials and supplies to be consumed in a production process or while rendering services. [Refer: Inventories]

+ References

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No definition available.

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