Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)		9 Months Ended
	Jan. 01, 2019	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset	$ 27,500,000		$ 25,485,000	$ 26,385,000
Operating lease, liability, current			2,769,000	2,571,000
Operating lease, liability, noncurrent			$ 26,845,000	$ 28,170,000
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset	27,500,000
Operating lease, liability, current	2,900,000
Operating lease, liability, noncurrent	29,200,000
Accounting Standards Update 2016-02 [Member] | Deferred Rent [Member]
Significant Accounting Policies [Line Items]
Operating lease, expense	4,900,000
Accounting Standards Update 2016-02 [Member] | Prepaid Rent [Member]
Significant Accounting Policies [Line Items]
Operating lease, expense	$ 300,000
Coronavirus, Aid, Relief and Economic Security Act (CARES Act) [Member] | Forecast [Member]
Significant Accounting Policies [Line Items]
Percentage of deferred employee share of FICA taxes		6.20%
Deferred payroll tax payment		$ 137,700