BUSINESS COMBINATIONS - Porforma summary of financials (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Unaudited Pro Forma Summary Of Financial Information
Net revenues	$ 380,665	$ 376,533	$ 689,670	$ 681,958
Income (loss) from continuing operations	25,992	3,272	29,116	(10,400)
Income (loss) from discontinued operations, net of income taxes (benefit)	0	844	0	1,172
Net income (loss) available to the company	25,368	4,116	28,492	(9,228)
Net income (loss) available to common shareholders	$ 25,992	$ 4,116	$ 29,116	$ (9,228)
Income (loss) from continuing operations per common share basic	$ 0.19	$ 0.02	$ 0.21	$ (0.07)
Income (loss) from discontinued operations per common share - basic	0	0.01	0	0.01
Net income (loss) available to common shareholders per common share - basic	0.19	0.03	0.21	(0.07)
Income (loss) from continuing operations per common share - diluted	0.19	0.02	0.21	(0.07)
Income (loss) from discontinued operations per common share - diluted	0	0.01	0	0.01
Net income (loss) available to common shareholders per common share - diluted	$ 0.19	$ 0.03	$ 0.21	$ (0.07)
Weighted shares outstanding basic	138,760,483	138,638,554	138,684,845	138,961,728
Weighted Average Shares Outstanding Diluted	139,074,229	139,263,363	139,221,904	138,961,728

Business Acquisition, Pro Forma Income (Loss) from Continuing Operations available to common shareholders

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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The weighted average number of shares (units) outstanding in the calculation of pro forma basic earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

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