SHARE-BASED COMPENSATION - Compensation Expense from Share-Based Arrangements (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Recognition of fair value of restricted stock units, stock options, and SARs over vesting period; and issuance of common stock	$ 1,391	$ 1,100	$ 3,733	$ 2,924
Contributions of stock to the Company's 401(k) plan	0	842	2,192	2,664
Total share-based compensation expense	$ 1,391	$ 1,942	$ 5,925	$ 5,588
Company shares contributed to match employees' contributions to their 401k plans (shares)			342,353		269,567