Basis of Presentation and Significant Accounting Policies (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) segment	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of segments | segment	2
Operating lease right-of-use asset	$ 14,924		$ 0
Operating lease liability	$ 14,807		$ 0
Residential Mortgage Holding Company
Schedule of Equity Method Investments [Line Items]
Ownership percentage	100.00%
Accounting Standards Update 2016-02
Schedule of Equity Method Investments [Line Items]
Operating lease right-of-use asset	$ 14,900	$ 15,900
Operating lease liability	$ 14,800	$ 15,900