Leases - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) a Mile	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Lessee Lease Description [Line Items]
Number of area not to use within the radius of land lease | Mile	560
Estimated incremental borrowing rate	8.20%
Operating lease, lease payment, description	The minimum yearly rent is adjusted every three years to an amount equal to 80% of the average accounting year rent actually paid for the three previous years.
Number of percentage of average accounting year rent adjusted on minimum yearly rent	80.00%
Rent expense	$ 10,400	$ 16,578
Operating lease costs related to options to extend lease terms	7,200
Operating Expenses and Selling, General and Administrative Expenses [Member]
Lessee Lease Description [Line Items]
Short term rent expense	4,200
ASU 2016-02 [Member]
Lessee Lease Description [Line Items]
Lease asset net balance reclassified	$ 14,000
City of San Deigo [Member]
Lessee Lease Description [Line Items]
Number of land lease area | a	190
Mission Bay Park, California (Premises) [Member]
Lessee Lease Description [Line Items]
Number of land lease area | a	17
Current lease term	2048-06
Rent expense	$ 10,500	$ 11,200	$ 10,500