COMMITMENTS AND CONTINGENCIES (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions				1 Months Ended	12 Months Ended
	Feb. 09, 2015	Oct. 10, 2014	Oct. 21, 2012	Feb. 28, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule Of Commitments And Contingencies [Line Items]
Operating lease, rent expense					$ 6.3	$ 6.2	$ 5.9
Acquisition of common stock	$ 32
Former Shareholders who owned common stock, shares			1.4
Restricted cash and interest payments to dissenting shareholders	$ 51.1
Business acquisition restricted cash	45.3
Accrued interest paid	$ 5.8
Predecessor [Member]
Schedule Of Commitments And Contingencies [Line Items]
Acquisition of common stock			$ 32
Digitization and Publication Agreement [Member]
Schedule Of Commitments And Contingencies [Line Items]
Contractual agreement term				10 years
Minimum annual payments					$ 20.0
Minimum [Member]
Schedule Of Commitments And Contingencies [Line Items]
Damages sought		$ 30.0