SEGMENT REPORTING (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Property and Equipment and Intangible Assets Outside of the United States
Total revenue	$ 157,174	$ 170,859	$ 66,024	$ 53,354	$ 59,360	$ 53,090	$ 45,777	$ 42,899	$ 447,411	$ 201,126	$ 169,138
Total long- lived assets	506,351				151,691				506,351	151,691
United States
Revenue, Property and Equipment and Intangible Assets Outside of the United States
Total revenue									388,084	147,128	130,889
Total long- lived assets	446,412				86,175				446,412	86,175
Canada
Revenue, Property and Equipment and Intangible Assets Outside of the United States
Total revenue									59,327	53,998	38,249
Total long- lived assets	$ 59,939				$ 65,516				$ 59,939	$ 65,516