Regulatory Capital Requirements - Summary of Minimum Capital Requirements (Details) - Mortgage World Bankers Inc $ in Thousands	Sep. 30, 2020 USD ($)
HUD
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	$ 1,000
Warehouse Line of Credit #1
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	2,500
Warehouse Line of Credit #2
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	500
New York Department of Financial Services
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	250
Other State Banking Departments
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	$ 250