EMPLOYEE BENEFIT PLANS - 401(k) Plan (Details) - USD ($)	11 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 01, 2015
401 (k) Plan
Employee contribution, maximum percentage of eligible annual compensation (up to)		25.00%
Maximum annual contribution by employee		$ 18,000
Minimum age required to be eligible to make catch-up contribution		50 years
Maximum additional contribution over and above regular annual contribution limits		$ 6,000
Maximum employer matching contribution (as a percent)		4.00%
Amount of expenses recorded under a plan that provides supplemental matching contributions in excess of limits imposed		$ 600,000	$ 500,000	$ 400,000
Deferred Compensation Plan
Per share merger consideration (in dollars per share)					$ 70.00
Successor
401 (k) Plan
Expenses recorded due to adopting a cash match for employee contributions to the 401(k) plan	$ 6,300,000	$ 7,500,000