Acquisitions - Summary of Preliminary Allocation of Purchase Price to Fair Values of Identifiable Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands		Dec. 31, 2020	Jul. 01, 2020	Jun. 30, 2020
Business Acquisition [Line Items]
Goodwill		$ 110,109		$ 80,677
Modernize, Inc. [Member] | Preliminary [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		3,638	$ 3,638
Accounts receivable, net		4,999	4,999
Operating lease right-of-use assets		4,702	4,702
Other intangible assets		33,700	33,700
Other assets		1,386	1,386
Total identifiable assets acquired		48,425	48,425
Accrued liabilities		4,909	4,909
Operating lease liabilities		4,896	4,896
Deferred tax liabilities			7,886
Other liabilities		465	465
Total identifiable liabilities assumed		10,270	18,156
Net identifiable assets acquired		38,155	30,269
Goodwill		32,644	38,451
Net assets acquired		70,799	$ 68,720
Modernize, Inc. [Member] | Year To Date Adjustments [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	[1]
Accounts receivable, net	[1]
Operating lease right-of-use assets	[1]
Other intangible assets	[1]
Other assets	[1]
Total identifiable assets acquired	[1]
Accrued liabilities	[1]
Operating lease liabilities	[1]
Deferred tax liabilities	[1]	(7,886)
Other liabilities	[1]
Total identifiable liabilities assumed	[1]	(7,886)
Net identifiable assets acquired	[1]	7,886
Goodwill	[1]	(5,807)
Net assets acquired	[1]	$ 2,079

[1] The Company intends to make a 338(h)(10) election to treat the acquisition for tax purposes as a purchase and sale of assets which resulted in the release of the deferred tax liabilities of $7.9 million. The Company has agreed to pay any incremental taxes to Modernize resulting from that election, for an increase in total consideration of $2.1 million.