Notes Payable - Future Maturities of the CRG Obligation (Detail) - CRG - Line of Credit $ in Thousands	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
2020	$ 0
2021	0
2022	13,846
2023	18,462
2024	18,462
2025	9,230
Total maturities	60,000
Unamortized discount and loan costs	(1,432)
Total notes payable obligation	$ 58,568

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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