Components of Deferred Tax Assets (liabilities) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Deferred tax assets
Inventory	$ 1,187		$ 1,185
Bad debt provision	49		85
Property, plant and equipment	109		59
Deferred credits	1,281		1,281
Loss carryforwards	1,054		1,035
Rent	162		150
Other	817		431
Gross deferred tax assets	4,659		4,226
Less valuation allowance	(1,376)		(1,213)
Deferred Tax Assets, Net of Valuation Allowance, Total	3,283		3,013
Deferred tax liabilities
Property, plant and equipment	(61)		(22)
Unremitted earnings of foreign affiliates	(58)		(77)
Other	(30)
Gross deferred tax liabilities	(149)		(99)
Net deferred tax assets	$ 3,134	[1]	$ 2,914	[1]

[1] Of the total deferred tax assets at December 31, 2012 and 2011, $1,849,000 and $1,787,000 were included in current assets and $1,285,000 and $1,127,000 in 2012 and 2011 were included in other long-term assets at December 31, 2012 and 2011, respectively.