QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended													12 Months Ended
	Dec. 31, 2018	[1]	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	[1]	Dec. 31, 2017	[2]	Sep. 30, 2017		Jun. 30, 2017	[2]	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Net revenue	$ 113,541		$ 110,730	$ 115,206	$ 99,621		$ 109,036		$ 112,078	[2]	$ 117,638		$ 101,289	$ 439,098	$ 440,041
Operating income	9,411		32,101	24,813	7,315		20,627		3,531		12,108		16,453	73,640	52,719
Net (loss) income	117,415		23,375	23,896	(22,522)		121,627		(7,818)		1,010		(2,357)
Consolidated net (loss) income attributable to common stockholders	$ 116,922		$ 23,044	$ 23,590	$ (22,555)		$ 121,284		$ (7,886)		$ 802		$ (2,313)	$ 141,001	$ 111,887
BASIC AND DILUTED NET (LOSS) INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS
Net (loss) income per share	$ 2.62		$ 0.51	$ 0.51	$ (0.48)		$ 2.63		$ (0.17)		$ 0.02		$ (0.05)
Consolidated net (loss) income per share attributable to common stockholders - diluted	$ 2.49		$ 0.49	$ 0.49	$ (0.48)		$ 2.50		$ (0.17)		$ 0.02		$ (0.05)
WEIGHTED AVERAGE SHARES OUTSTANDING
Weighted average shares outstanding — basic	44,663,033		45,128,341	46,033,402	46,757,386		46,198,362		46,681,585		47,816,723		47,965,189	45,647,696	47,169,682
Weighted average shares outstanding —diluted	46,874,741		47,462,358	48,438,693	46,757,386		48,527,664		46,681,585		48,237,113		47,965,189	48,000,957	49,632,884

[1] The net (loss) income from continuing operations for the quarters ended March 31, 2018 and December 31, 2018, includes approximately $6.6 million and $14.7 million, respectively of impairment charges. The net income for the quarter ended December 31, 2018 includes a benefit from income taxes of approximately $127.8 million.

[2] The net income (loss) from continuing operations for the quarters ended June 30, 2017 and September 30, 2017, includes approximately $12.7 million and $16.4 million, respectively of impairment charges. The net income from continuing operations for the quarter ended June 30, 2017 includes approximately $14.4 million of gain on sale-leaseback. The net income for the quarter ended December 31, 2017 includes a benefit from income taxes of approximately $117.2 million.