Consolidated Statement Of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 15,730	$ (23,186)
Reconciliation of the net increase (decrease) in equity resulting from operations to net cash provided by (used in) operating activities:
Net realized (gain) loss on investments, financial derivatives, and foreign currency transactions		1,786	12,195
Change in net unrealized (gain) loss on investments and financial derivatives, and foreign currency translation		(5,471)	24,261
Amortization of premiums and accretion of discounts (net)		3,884	3,720
Purchase of investments		(890,283)	(739,404)
Proceeds from disposition of investments		468,671	722,698
Proceeds from principal payments of investments		63,423	56,376
Proceeds from investments sold short		970,690	697,389
Repurchase of investments sold short		(777,500)	(727,652)
Payments on financial derivatives	[1]	(20,816)	(93,292)
Proceeds from financial derivatives	[1]	25,507	59,937
Share-based LTIP expense		94	100
Repurchase agreements		(108,983)	(21,768)
(Increase) decrease in assets:
Receivable for securities sold and financial derivatives		(105,129)	99,197
Due from brokers		35,778	(43,368)
Interest and principal receivable		(3,367)	2,155
Restricted cash		0	372
Other assets		(1,905)	2,605
Increase (decrease) in liabilities:
Due to brokers		(7,268)	10,143
Payable for securities purchased and financial derivatives		225,367	(61,989)
Accounts payable and accrued expenses		402	145
Other liabilities		1,119	(211)
Interest and dividends payable		677	743
Base management fee payable		(6)	(162)
Net cash provided by (used in) operating activities		(107,600)	(18,996)
Cash flows provided by (used in) financing activities:
Contributions from non-controlling interests		10,922	684
Shares repurchased		(2,052)	(2,834)
Dividends paid		(14,821)	(16,872)
Distributions to non-controlling interests		(195)	(1,922)
Proceeds from issuance of other secured borrowings		43,629	23,238
Principal payments on other secured borrowings		(1,628)	0
Borrowings under reverse repurchase agreements		3,050,318	1,820,060
Repayments of reverse repurchase agreements		(2,997,628)	(1,845,185)
Net cash provided by (used in) financing activities		88,545	(22,831)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		(19,055)	(41,827)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		123,274	183,909
CASH AND CASH EQUIVALENTS, END OF PERIOD		104,219	142,082
Supplemental disclosure of cash flow information:
Interest paid		4,658	3,047
Share-based LTIP awards (non-cash)		94	100
Aggregate TBA trade activity (buys sells) (non-cash)		4,464,932	5,120,727
Purchase of investments (non-cash)		(16,328)	0
Proceeds from principal payments of investments (non-cash)		4,286	0
Proceeds from the disposition of investments (non-cash)		16,328	0
Principal payments on other secured borrowings (non-cash)		$ (4,286)	$ 0

[1] Conformed to current period presentation.