Quarterly report pursuant to Section 13 or 15(d)

Summary of Property, Plant, and Equipment (Detail)

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Summary of Property, Plant, and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross $ 8,297 $ 8,027
Accumulated depreciation and amortization (6,716) (6,518)
Property, plant, and equipment, net 1,581 1,509
Land
    
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross 188 191
Building
    
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross 242 246
Leasehold Improvements
    
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross 1,201 1,193
Equipment And Computers
    
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross 5,544 5,219
Furniture and Fixtures
    
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross 1,049 1,046
Construction in Progress
    
Property Plant And Equipment Disclosure [Line Items]    
Property, plant and equipment, gross $ 73 $ 132