FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2015

FAIR VALUE OF FINANCIAL INSTRUMENTS

Schedule of carrying amount and estimated fair value of financial instruments

	March 31, 2015				December 31, 2014
	Fair		Carrying		Fair		Carrying
	value		amount		value		amount
	(in thousands)
Financial assets
Collateral security account	$	2,812	$	2,812	$	3,165	$	3,165
Financial liabilities
Fixed rate debentures	$	3,100	$	1,636	$	3,035	$	1,636
Line of credit	153,748		153,748		134,749		134,749
Senior Notes	177,000		296,184		195,000		296,053
Contingent Earn-Out	6,660		6,660		6,530		6,530

Schedule of assets and liabilities, including both current and non-current portions, measured at fair value on a recurring basis

March 31, 2015

	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Restricted investments in US Treasury Bonds — available for sale, at fair value	$	1,459	$	—	$	—	$	1,459
Commodity derivatives	—		3,968		—		3,968

December 31, 2014

	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Restricted investments in US Treasury Bonds — available for sale, at fair value	$	1,422	$	—	$	—	$	1,422
Commodity derivatives	—		$	4,005	—		$	4,005