INCOME TAXES (Tables)

6 Months Ended

Jun. 30, 2013

INCOME TAXES

Reconciliation between the effective income tax rate, as computed on income (loss) before income taxes, and the statutory federal income tax rate

	Three Months Ended										Six Months Ended
	June 30										June 30
	2013					2012					2013					2012
	(in thousands)
Income tax expense (benefit) at the statutory federal rate	$	2,753		35.0	%	$	2,129		35.0	%	$	(5,403	)	(35.0	)%	$	(5,758	)	(35.0	)%
Federal income tax effects of:
Net reversal in valuation allowances	(528		)	(6.7	)	(7,973		)	(131.0	)	(216		)	(1.4	)	(3,333		)	(20.3	)
Alternative fuel tax credit	(241		)	(3.0	)	—			—		(1,421		)	(9.2	)	—			—
Effect of permanent differences and other	703			8.9		(635		)	(10.4	)	721			4.7		(871		)	(5.3	)
State income taxes	300			3.8		722			11.8		(602		)	(3.9	)	(169		)	(1.0	)
Total income tax expense (benefit)	$	2,987		38.0	%	$	(5,757	)	(94.6	)%	$	(6,921	)	(44.8	)%	$	(10,131	)	(61.6	)%