Consolidated Statement Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INVESTMENT INCOME
Interest income	$ 93,533	$ 85,740	$ 63,857
Other investment income	318	0	0
Total investment income	93,851	85,740	63,857
EXPENSES
Base management fee	10,751	9,115	6,835
Incentive fee	1,400	8,366	19,145
Interest expense	9,927	11,025	7,799
Other investment related expenses	4,689	496	0
Compensation expense	1,182	1,721	1,308
Custody and other fees	1,853	1,308	1,154
Professional fees	2,795	1,783	1,386
Agency and administration fees	1,231	1,133	923
Insurance expense	734	706	720
Directors' fees and expenses	271	253	265
Share-based LTIP expense	267	179	135
Total expenses	35,100	36,085	39,670
NET INVESTMENT INCOME	58,751	49,655	24,187
Net realized gain (loss) on:
Investments	16,859	39,485	23,550
Financial derivatives	(11,211)	(21,479)	(34,797)
Foreign currency transactions	(1,486)	(4)	0
Total net realized gain (loss) on investments, financial derivatives, and foreign currency transactions	4,162	18,002	(11,247)
Change in net unrealized gain (loss) on:
Investments	6,258	(1,819)	70,789
Financial derivatives	(8,272)	13,482	13,417
Foreign currency translation	(950)	42	0
Total Change in Net Unrealized Gain Loss On Investments, Financial derivatives, and Foreign currency translation	(2,964)	11,705	84,206
NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS, FINANCIAL DERIVATIVES, AND FOREIGN CURRENCY TRANSACTIONS/TRANSLATION	1,198	29,707	72,959
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	59,949	79,362	97,146
Net Income (Loss) Attributable to Noncontrolling Interest	782	838	0
Net Income (Loss) Attributable to Parent	$ 59,167	$ 78,524	$ 97,146
NET INCREASE IN SHAREHOLDERS' EQUITY RESULTING FROM OPERATIONS PER SHARE:
Basic and Diluted (in usd per share)	$ 2.09	$ 3.28	$ 5.31