Note 3 - Supplemental Balance Sheet Information (in thousands) (Detail) - Property and equipment (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Property and equipment, gross	$ 14,230	$ 12,920
Less accumulated depreciation and amortization	12,453	11,397
	1,777	1,523
Equipment [Member]
Property and equipment, gross	8,366	7,866
Furniture and Fixtures [Member]
Property and equipment, gross	570	543
Leasehold Improvements [Member]
Property and equipment, gross	250	250
Software Development [Member]
Property and equipment, gross	$ 5,044	$ 4,261

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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