Quarterly report pursuant to Section 13 or 15(d)

Components of Accrued Liabilities (Detail)

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Components of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Components of accrued liabilities      
Payroll and benefits $ 2,026 $ 2,303  
Warranty accrual, current portion 1,087 1,345 $ 1,027
Taxes 296 445  
Accrued professional services 701 681  
Accrued capital lease and warranty obligations - current 168 167  
Accrued insurance premium 45 467  
Other 206 498  
Total accrued liabilities $ 4,529 $ 5,906