Operations by Segments and Geographic Areas - Schedule of Long-Lived Assets, Based on Geographical Location, Excluding Deferred Tax Assets and Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Long-lived assets
Long-lived assets	$ 61,395	$ 45,448
United States [Member]
Long-lived assets
Long-lived assets	46,505	36,374
United Kingdom [Member]
Long-lived assets
Long-lived assets	10,023	5,586
Other [Member]
Long-lived assets
Long-lived assets	$ 4,867	$ 3,488

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant