Leases - Summary of table presents lease assets and liabilities and their classification on the consolidated balance sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Operating lease assets	$ 23,678	$ 275
Finance lease assets	199
Total leased assets	23,877
Current:
Operating lease liabilities	4,468	291
Finance lease liabilities	166	343
Non-current:
Operating lease liabilities	14,479
Finance lease liabilities	48	$ 116
Total lease liabilities	$ 19,161

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

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Amount, after accumulated amortization, of right-of-use asset from finance lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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