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Property Plant and Equipment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Leasehold improvements $ 13,365 $ 13,306
Equipment 14,418 13,758
Furniture and fixtures 2,961 2,808
Construction in progress 282 425
Total property, plant and equipment 31,026 30,297
Less: accumulated depreciation (17,415) (16,496)
Property, plant and equipment, net $ 13,611 $ 13,801