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Business Segments, Geographic Data, Sales by Product Group and Major Customers - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Customer	Dec. 31, 2015 USD ($) Customer
Segment Reporting Information [Line Items]
Tools, dyes and molds	$ 22,841	$ 18,435
Percentage of net sales accounted from customer description	No other customer accounted for more than 10% of the Company's total net sales.
Number of major customers | Customer	3	3
China
Segment Reporting Information [Line Items]
Tools, dyes and molds	$ 15,710	$ 10,172
Net Accounts Receivable | Three Largest Customers | Customer Concentration Risk
Segment Reporting Information [Line Items]
Percentage of net accounts receivable accounted for by three largest customers	35.80%	56.20%

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Number of customers

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item.

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