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

Available-for-Sale Securities, Weighted Average Life Classifications (Details)

v3.10.0.1

Available-for-Sale Securities, Weighted Average Life Classifications (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than or equal to 1 year	$ 89,887
Greater than 1 year and less than or equal to 3 years	149,082
Greater than 3 years and less than or equal to 5 years	686,166
Greater than 5 years and less than or equal to 10 years	14,308,522
Greater than 10 years	4,059,697
Available-for-sale securities, at fair value	19,293,354	$ 21,220,819
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Less than or equal to 1 year	7,054
Greater than 1 year and less than or equal to 3 years	39,666
Greater than 3 years and less than or equal to 5 years	275,305
Greater than 5 years and less than or equal to 10 years	12,156,899
Greater than 10 years	3,310,067
Available-for-sale securities, at fair value	15,788,991	18,238,725
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Less than or equal to 1 year	82,833
Greater than 1 year and less than or equal to 3 years	109,416
Greater than 3 years and less than or equal to 5 years	410,861
Greater than 5 years and less than or equal to 10 years	2,151,623
Greater than 10 years	749,630
Available-for-sale securities, at fair value	$ 3,504,363	$ 2,982,094

- Definition

Fair value of available-for-sale debt securities maturing in the second fiscal year through the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Fair value of available-for-sale debt securities maturing in the fourth fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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Fair value of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

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+ References

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