FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring

The following fair values are estimated using market information and what the Company believes to be appropriate valuation methodologies under GAAP:

	September 30, 2018								December 31, 2017
(in thousands)	Carrying amount		Fair value						Carrying amount		Fair value
			Level 1		Level 2		Level 3				Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	102,860	$	102,860	$	—	$	—	$	105,006	$	105,006	$	—	$	—
Restricted cash	5,728		5,728		—		—		3,837		3,837		—		—
Investment in equity securities	44,967		44,967		—		—		49,153		49,153		—		—
Long-term receivable (Note 3)	2,165		—		—		2,165		—		—		—		—
Liabilities:
Long-term debt	388,760		—		388,760		—		413,581		—		407,377		—