CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Mortgage-backed securities, at fair value
Pledged to counterparties	$ 3,029,117,000	$ 2,991,586,000
Unpledged	59,397,000	22,917,000
Total mortgage-backed securities	3,088,514,000	3,014,503,000
Cash and cash equivalents	125,933,000	108,282,000
Restricted cash	16,998,000	17,981,000
Accrued interest receivable	12,585,000	13,241,000
Derivative Assets	13,199,000	16,885,000
Receivable for securities sold, pledged to counterparties	0	221,746,000
Other assets	518,000	2,993,000
Total Assets	3,257,747,000	3,395,631,000
Liabilities
Outstanding repurchase obligations	2,866,738,000	3,025,052,000
Payable for unsettled securities purchased	35,026,000	0
Dividends Payable	3,995,000	3,931,000
Derivitive Liabilities	5,346,000	5,947,000
Accrued interest payable	5,146,000	6,445,000
Due to affiliates	541,000	654,000
Other Liabilities	541,000	17,523,000
Total Liabilities	2,917,333,000	3,059,552,000
Stockholders' Equity
Preferred stock, $0.01 par value	0	0
Common Stock, $0.01 par value	499,000	491,000
Additional paid in capital	373,705,000	379,975,000
Accumulated deficit	(33,790,000)	(44,387,000)
Total Stockholders Equity	340,414,000	336,079,000
Total Liabilities and Stockholders Equity	3,257,747,000	3,395,631,000
Residential Mortgage Backed Securities [Member]
Mortgage-backed securities, at fair value
Pledged to counterparties	3,029,117,000	2,991,586,000
Unpledged	59,397,000	22,917,000
Total mortgage-backed securities	$ 3,088,514,000	$ 3,014,503,000

No definition available.

Name:	orc_MortgageBackedSecuritiesAtFairValueAbstract
Namespace Prefix:	orc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.