Inventories - Summary of Inventories (Details) - USD ($) $ in Thousands	Jun. 28, 2015	Dec. 31, 2014
Inventories
Finished goods	$ 12,922	$ 11,728
Work-in-process	8,000	7,297
Raw materials	16,297	15,562
Less: Inventory reserves	(6,795)	(6,700)
Inventories, net	$ 30,424	$ 27,887

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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