Leases - Summary of Maturities of Lease Liabilities (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee Disclosure [Abstract]
Operating Leases 2019 (excluding the 3 months ended March 31, 2019)	$ 67
Operating Leases 2020	266
Operating Leases 2021	162
Operating Leases 2022	84
Operating Leases Total lease payments	579
Operating Leases Less: Imputed interest	(47)
Lease liabilities	532
Finance Leases 2020	1
Finance Leases 2021	1
Finance Leases 2022	1
Finance Leases 2023	1
Finance Leases Thereafter	1
Finance Leases Total lease payments	5
Finance Leases Total	$ 5

Present value of lessee's discounted obligation for lease payments from finance lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977