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Line of Credit, Long-Term Debt and Capital Lease Obligations - Schedule of Capital Lease Obligations (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Disclosure [Abstract]    
Capital lease obligations $ 441 $ 1,826
Less: Current portion (253) (1,401)
Long-term portion $ 188 $ 425