GOODWILL AND OTHER INTANGIBLE ASSETS - Estimated Amortization Expense (Details) - USD ($)		12 Months Ended
	Oct. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2017		$ 5,921,000
2018		5,243,000
2019		4,562,000
2020		3,877,000
2021		3,170,000
Thereafter		4,756,000
Total estimated amortization expense		27,529,000
Goodwill, impairment loss	$ 0
Impairment of intangible assets, finite-lived		$ 0	$ 0	$ 0