Inventory - Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Raw materials	$ 9,201	$ 7,376
Work-in-process	80	44
Finished goods	4,943	4,688
Reserve for excess and obsolete inventory	(972)	(999)
Total inventory	$ 13,252	$ 11,109

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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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