Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 1,872,000	$ 2,677,000
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Stock based compensation and equity plan amortization	386,000	298,000
Realized and unrealized (gains) losses on mortgage-backed securities	(12,302,000)	8,926,000
Realized and unrealized loss on interest rate swaption	(36,000)	1,152,000
Unrealized (gains) losses on interest rate swaps	(5,561,000)	0
Gains On TBA Securities	1,911,000	31,000
Changes in operating assets and liabilities
Accrued interest receivable	(203,000)	(2,414,000)
Other assets	(213,000)	(234,000)
Accrued interest payable	549,000	(29,000)
Other liabilities	(321,000)	(209,000)
Due to affiliates	(21,000)	126,000
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	(2,817,000)	10,324,000
From mortgage-backed securities investments
Purchases	(1,485,258,000)	(1,139,704,000)
Sales	1,327,500,000	402,575,000
Principal repayments	109,412,000	110,081,000
Proceeds From Sale Of Federal Home Loan Bank Stock	3,750,000	0
Increase in restricted cash	(6,254,000)	(15,270,000)
Proceeds From Net TBA Settlements	(1,598,000)	(31,000)
Purchase of interest rate swaptions, net of margin cash received	(704,000)	1,157,000
NET CASH USED IN INVESTING ACTIVITIES	(51,744,000)	(643,506,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from repurchase agreements	14,290,130,000	7,458,153,000
Principal payments on repurchase agreements	(14,028,116,000)	(6,880,733,000)
Payments For Federal Home Loan Bank Advances	187,500,000	0
Cash dividends	(18,421,000)	(20,179,000)
Proceeds From Issuance Of Common Stock	6,591,000	83,275,000
NET CASH PROVIDED BY FINANCING ACTIVITIES	62,684,000	640,516,000
NET INCREASE IN CASH AND CASH EQUIVALENTS	8,123,000	7,334,000
CASH AND CASH EQUIVALENTS, beginning of the period	57,229,000	93,137,000
CASH AND CASH EQUIVALENTS, end of the period	65,352,000	100,471,000
Cash paid during the period for:
Interest	6,100,000	2,892,000
SUPPLEMENTAL DISCLOSURES OF NONCASH FINANCING ACTIVITIES:
Securities acquired settled in later period	$ 4,276,000	$ 7,623,000