Mergers and Acquisitions- Summary of Supplemental Pro Forma Information Adjustments (Details) - Sterling $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($)
Business Acquisition [Line Items]
Merger-related expenses	$ 108,495
Compensation and benefits
Business Acquisition [Line Items]
Merger-related expenses	41,585
Occupancy
Business Acquisition [Line Items]
Merger-related expenses	356
Technology and equipment
Business Acquisition [Line Items]
Merger-related expenses	19,085
Professional and outside services
Business Acquisition [Line Items]
Merger-related expenses	44,457
Other expense
Business Acquisition [Line Items]
Merger-related expenses	$ 3,012

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration