Consolidated Statement Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
INVESTMENT INCOME
Interest income	$ 63,540	$ 45,627	$ 51,715
EXPENSES
Base management fee	5,744	4,910	4,247
Incentive fee	612	4,428	18,874
Share-based LTIP expense	147	1,987	3,625
Interest expense	6,647	3,826	2,461
Professional fees	1,630	1,952	1,989
Compensation expense	1,235	935	390
Insurance expense	711	1,114	513
Agency and administration fees	915	743	613
Custody and other fees	954	682	433
Directors' fees and expenses	250	263	219
Total expenses	18,845	20,840	33,364
NET INVESTMENT INCOME	44,695	24,787	18,351
Net realized gain (loss) on:
Investments	10,524	23,670	(14,814)
Swaps	17,400	5,761	6,808
Futures	(1,093)	(3,689)	(698)
Purchased options		(581)	(3,478)
Total net realized gain (loss) on investments and financial derivatives	26,831	25,161	(12,182)
Change in net unrealized gain (loss) on:
Investments	(39,321)	5,085	88,965
Swaps	(22,780)	(15,186)	(139)
Futures	902	182	(1,072)
Purchased options		542	(542)
Total net unrealized gain (loss) on investments and financial derivatives	(61,199)	(9,377)	87,212
NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FINANCIAL DERIVATIVES	(34,368)	15,784	75,030
NET INCREASE IN SHAREHOLDERS' EQUITY RESULTING FROM OPERATIONS	$ 10,327	$ 40,571	$ 93,381
NET INCREASE IN SHAREHOLDERS' EQUITY RESULTING FROM OPERATIONS PER SHARE:
Basic and Diluted	$ 0.61	$ 3.04	$ 7.52