FINANCING ARRANGEMENTS - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt	$ 120,599	$ 119,606
Senior Notes | Senior Term Notes, net
Debt Instrument [Line Items]
Interest rate %	5.50%	5.50%	5.50%
Long-term debt	$ 120,599	$ 119,606
Line of Credit | Revolving credit facility
Debt Instrument [Line Items]
Interest rate %	0.00%	0.00%
Long-term debt	$ 0	$ 0