Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Deferred Tax Assets And Liabilities (Detail)

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Income Taxes - Schedule of Deferred Tax Assets And Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Components Of Deferred Tax Assets And Liabilities [Abstract]      
Net operating losses $ 24,852 $ 16,372 $ 9,252
Stock-based compensation expenses 3,637 2,747 2,691
Financing lease obligations 4,640 4,009 2,131
Tax credit carry forwards 2,106 922 735
Compensation and employee benefits 97 474 576
Other 307 116 8
Gross deferred tax assets 35,639 24,640 15,393
Less valuation allowance (30,888) (20,329) (12,792)
Net deferred tax assets 4,751 4,311 2,601
Fixed assets (4,746) (4,352) (2,600)
Other (5) 41 (1)
Gross deferred tax liabilities $ (4,751) $ (4,311) $ (2,601)