SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Net revenue	$ 720,779	$ 615,880	$ 497,266	$ 476,492	$ 505,730	$ 493,928	$ 479,490	$ 460,643	$ 2,310,417	$ 1,939,791	$ 1,828,046
Gross profit	175,642	137,773	101,390	98,194	111,000	108,245	101,274	101,696	512,999	422,215	445,999
Operating income (loss)	13,973	(11,725)	(8,005)	5,438	13,548	12,759	8,897	3,065	(319)	38,269	27,279
Net income (loss)	$ (15,811)	$ (42,794)	$ (13,603)	$ (3,712)	$ 3,254	$ 1,791	$ (4,309)	$ (6,851)	$ (75,920)	$ (6,115)	$ 3,878
(Loss) earnings per common share, basic and diluted (in dollars per share)	$ (0.09)	$ (0.26)	$ (0.10)	$ (0.03)	$ 0.02	$ 0.01	$ (0.03)	$ (0.05)	$ (0.49)	$ (0.04)	$ 0.03

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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