Annual report pursuant to Section 13 and 15(d)

Summary of Net Deferred Tax Assets and Net Deferred Tax Liabilities (Detail)

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Summary of Net Deferred Tax Assets and Net Deferred Tax Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Summary Of Net Deferred Tax Assets And Net Deferred Tax Liabilities [Line Items]    
Capitalized intangible assets for tax purposes $ 283 $ 405
Reserves not currently deductible 1,702 2,082
Deferred revenue 8 328
Stock options 2,565 2,348
State taxes 7 45
Income tax credits 1,583 1,167
Inventory 871 868
Property and equipment 376 240
Other comprehensive income 109 127
Unrealized gain on foreign currency 142 160
Net operating losses 28,058 25,746
Total deferred tax assets 35,704 33,516
Valuation allowance (35,566) (33,341)
Net deferred tax assets 138 175
Capitalized intangible assets (696) (703)
Other (59) (119)
Total deferred tax liabilities (755) (822)
Net deferred tax liabilities $ (617) $ (647)