HEDGES AND OTHER DERIVATIVE INSTRUMENTS - Summary of Net Forward Currency Sell Contracts Under Freestanding Derivatives (Detail) (Not Designated as Hedging Instrument, Foreign Currency Forward Sell Contracts) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2014 Euro USD ($)	Dec. 31, 2013 Euro USD ($)	Mar. 31, 2014 Euro EUR (€)	Dec. 31, 2013 Euro EUR (€)	Mar. 31, 2014 Euro Minimum	Dec. 31, 2013 Euro Minimum	Mar. 31, 2014 Euro Maximum	Dec. 31, 2013 Euro Maximum	Mar. 31, 2014 USD USD ($)	Dec. 31, 2013 USD USD ($)	Mar. 31, 2014 USD Minimum	Dec. 31, 2013 USD Minimum	Mar. 31, 2014 USD Maximum	Dec. 31, 2013 USD Maximum	Mar. 31, 2014 GBP USD ($)	Dec. 31, 2013 GBP USD ($)	Mar. 31, 2014 GBP GBP (£)	Dec. 31, 2013 GBP GBP (£)	Mar. 31, 2014 Japanese Yen USD ($)	Dec. 31, 2013 Japanese Yen USD ($)	Mar. 31, 2014 Japanese Yen JPY (¥)	Dec. 31, 2013 Japanese Yen JPY (¥)	Mar. 31, 2014 Japanese Yen Minimum	Dec. 31, 2013 Japanese Yen Minimum	Mar. 31, 2014 Japanese Yen Maximum	Dec. 31, 2013 Japanese Yen Maximum
Derivative [Line Items]
Contract amount	$ 316,674	$ 276,070	$ 201,266	$ 153,959	€ 149,055	€ 115,685					$ 53,498	$ 54,361					$ 4,643	$ 4,643	£ 3,000	£ 3,000	$ 57,267	$ 63,107	¥ 5,745,650	¥ 6,261,700
Market Value in U.S. Dollars	317,958	274,318	205,319	159,485							51,907	50,286					5,001	4,966			55,731	59,581
Net Unrealized Appreciation (Depreciation)	$ (1,284)	$ 1,752	$ (4,053)	$ (5,526)							$ 1,591	$ 4,075					$ (358)	$ (323)			$ 1,536	$ 3,526
Expiration date							Apr. 08, 2014	Jan. 08, 2014	Jan. 08, 2015	Oct. 31, 2014			Apr. 08, 2014	Jan. 08, 2014	Jan. 30, 2015	Sep. 30, 2014	Apr. 30, 2014	Apr. 30, 2014							Apr. 30, 2014	Jan. 31, 2014	Jan. 30, 2015	Jan. 30, 2015