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

Serviced Mortgage Assets (Details) $ in Thousands	Jun. 30, 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	756,887	720,999
Unpaid Principal Balance \| $	$ 171,938,368	$ 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	753,312	717,167
Unpaid Principal Balance \| $	$ 169,643,681	$ 163,102,308
Loans in Securitization Trusts, Residential Mortgages [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	3,492	3,612
Unpaid Principal Balance \| $	$ 2,280,805	$ 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	83	220
Unpaid Principal Balance \| $	$ 13,882	$ 34,374