Two Harbors Investment Corp. Annual report pursuant to Section 13 and 15(d)

Serviced Mortgage Assets (Details) $ in Thousands	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) 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	796,698	720,999
Unpaid Principal Balance \| $	$ 177,928,604	$ 165,529,153
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	793,470	717,167
Unpaid Principal Balance \| $	$ 175,882,142	$ 163,102,308
Residential mortgage loans in securitization trusts [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	3,157	3,612
Unpaid Principal Balance \| $	$ 2,033,951	$ 2,392,471
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	71	220
Unpaid Principal Balance \| $	$ 12,511	$ 34,374