Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Estimated Fair Values of Financial Instruments

The estimated fair values of our financial instruments at the dates presented below are as follows:

	March 31,				December 31,
	2016				2015
	Carrying		Fair		Carrying		Fair
(In thousands)	Amount		Value		Amount		Value
Cash and cash equivalents, restricted cash and short-term investments (Level 1)	$	5,298	$	5,298	$	8,130	$	8,130
Revolving credit facility borrowings (Level 1)	6,005		6,005		—		—
Long-term debt (Level 1)	575,000		555,250		575,000		558,250