Consolidated Statement Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
INVESTMENT INCOME
Interest income	$ 15,733	$ 15,849
EXPENSES
Base management fee	1,492	1,481
Incentive fee		612
Share-based LTIP expense	28	38
Interest expense	1,832	1,543
Professional fees	278	553
Compensation expense	375	248
Insurance expense	177	167
Agency and administration fees	213	240
Custody and other fees	304	295
Directors' fees and expenses	74	74
Total expenses	4,773	5,251
NET INVESTMENT INCOME	10,960	10,598
Net realized gain (loss) on:
Investments	8,147	8,236
Swaps	(19,928)	3,739
Futures	(8)	(371)
Total net realized gain (loss) on investments and financial derivatives	(11,789)	11,604
Change in net unrealized gain (loss) on:
Investments	18,130	(9,251)
Swaps	14,817	(2,163)
Futures	(63)	319
Total net unrealized gain (loss) on investments and financial derivatives	32,884	(11,095)
NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FINANCIAL DERIVATIVES	21,095	509
NET INCREASE IN SHAREHOLDERS' EQUITY RESULTING FROM OPERATIONS	$ 32,055	$ 11,107
NET INCREASE IN SHAREHOLDERS' EQUITY RESULTING FROM OPERATIONS PER SHARE:
Basic and Diluted	$ 1.90	$ 0.66