| Component: (Network and Table) | |
|---|---|
| Network | 100260 - Disclosure - UNSECURED BORROWINGS (Tables) (http://capstead.com/20161231/taxonomy/role/DisclosureUNSECUREDBORROWINGSTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000766701 (http://www.sec.gov/CIK) |
| Debt Disclosure [Abstract] | Period [Axis] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-01-01 - 2016-12-31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Debt Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Subordinated Note Balances and Related Weighted Average Interest Rates | Note balances net of deferred issuance costs, and related weighted average interest rates as of the indicated dates (calculated including issuance cost amortization and adjusted for effects of related Derivatives held as cash flow hedges) were as follows (dollars in thousands):
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