Inventories - Summary of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventories
Finished goods	$ 11,728us-gaap_InventoryFinishedGoods	$ 10,310us-gaap_InventoryFinishedGoods
Work-in-process	7,297us-gaap_InventoryWorkInProcess	7,492us-gaap_InventoryWorkInProcess
Raw materials	15,562us-gaap_InventoryRawMaterials	19,021us-gaap_InventoryRawMaterials
Less: Inventory reserves	(6,700)us-gaap_InventoryValuationReserves	(4,597)us-gaap_InventoryValuationReserves
Inventories, net	$ 27,887us-gaap_InventoryNet	$ 32,226us-gaap_InventoryNet

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.

+ References

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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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