FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2012

FAIR VALUE OF FINANCIAL INSTRUMENTS

Schedule of carrying amount and estimated fair value of financial instruments

	June 30, 2012				December 31, 2011
	Fair		Carrying		Fair		Carrying
	value		amount		value		amount
	(in thousands)
Financial assets
Collateral security account	$	3,164	$	3,164	$	3,163	$	3,163
Financial liabilities
Fixed rate debentures	$	2,207	$	1,636	$	2,195	$	1,651
Other long-term liabilities	26		26		103		103
Line of credit	99,500		99,500		89,500		89,500

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

June 30, 2012	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Restricted investments in US Treasury Bonds — available for sale, at fair value	$	1,396	$	—	$	—	$	1,396
Commodity derivatives	$	—	$	972	$	—	$	972

December 31, 2011	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Restricted investments in US Treasury Bonds — available for sale, at fair value	$	1,349	$	—	$	—	$	1,349
Commodity derivatives	$	—	$	309	$	—	$	309

	Level 1		Level 2		Level 3		Total
	(in thousands)
Liabilities
Commodity derivatives	$	—	$	980	$	—	$	980