Payables and Accrued Liabilities - Additional Information (Details)	6 Months Ended
	Jun. 30, 2017 Site
Accounts Payable And Accrued Liabilities [Line Items]
Number Of Future Core Operation Sites	3
Number Of Future Core Reverse Mortgage Operation Sites	1
Fort Washington, PA [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Future Core Operation Site	Fort Washington, PA
Jacksonville, FL [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Future Core Operation Site	Jacksonville, FL
Tempe, AZ [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Future Core Operation Site	Tempe, AZ
Houston, TX [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Future Core Reverse Mortgage Operation Site	Houston, TX
Irving, TX [Member]
Accounts Payable And Accrued Liabilities [Line Items]
Future Closed Operation Site	Irving, TX