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

Available-for-sale Securities Classified by Rate Type (Details)

Available-for-sale Securities Classified by Rate Type (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, at fair value	$ 14,969,859	$ 6,249,252
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Adjustable Rate	200,556	231,678
Available-for-sale Securities, Fixed Rate	12,268,507	4,821,479
Available-for-sale securities, at fair value	12,469,063	5,053,157
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Adjustable Rate	2,207,347	995,014
Available-for-sale Securities, Fixed Rate	293,449	201,081
Available-for-sale securities, at fair value	2,500,796	1,196,095
Collateralized Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Adjustable Rate	2,407,903	1,226,692
Available-for-sale Securities, Fixed Rate	12,561,956	5,022,560
Available-for-sale securities, at fair value	$ 14,969,859	$ 6,249,252

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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+ Details