Two Harbors Investment Corp. Quarterly report pursuant to Section 13 or 15(d)

Serviced Mortgage Assets (Details) $ in Thousands	Sep. 30, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Number of Loans \| loan	721,483	796,698
Unpaid Principal Balance \| $	$ 157,816,550	$ 177,928,604
Mortgage Servicing Rights [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Number of Loans \| loan	719,344	793,470
Unpaid Principal Balance \| $	$ 156,444,362	$ 175,882,142
Residential Mortgage [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Number of Loans \| loan	2,139	3,157
Unpaid Principal Balance \| $	$ 1,372,188	$ 2,033,951
Other Assets [Member]
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]
Number of Loans \| loan	0	71
Unpaid Principal Balance \| $	$ 0	$ 12,511