Annual report pursuant to Section 13 and 15(d)

Acquisition of CYS Investments, Inc. (Details)

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Acquisition of CYS Investments, Inc. (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Jul. 31, 2018
USD ($)
$ / shares
shares
Dec. 31, 2018
shares
Dec. 31, 2017
shares
Dec. 31, 2016
shares
Class of Stock [Line Items]        
Number of shares of stock issued during period (in shares)       30,301
Aggregate cash consideration exchanged for shares of CYS common stock | $ $ 14,967      
Cash consideration provided to CYS common stockholders (in usd per share) | $ / shares $ 0.0965      
Exchange ratio for number of shares of Two Harbors common stock issued 0.4680      
Common Stock [Member]        
Class of Stock [Line Items]        
Number of shares of stock issued during period (in shares) 72,587,772 72,616,483 26,950  
Series D Preferred Stock [Member]        
Class of Stock [Line Items]        
Number of shares of stock issued during period (in shares) 3,000,000      
Series E Preferred Stock [Member]        
Class of Stock [Line Items]        
Number of shares of stock issued during period (in shares) 8,000,000