Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net loss	$ (640)	$ (2,464)
Other comprehensive income:
Unrealized gain on effective portion of fuel hedge, net of tax of $1,100 and $247 in 2012 and 2011, respectively	2,864	643
Reclassification of fuel hedge gain into statement of operations, net of income tax of $300 and $177 in 2012 and 2011, respectively	(782)	(460)
Total other comprehensive income	2,082	183
Comprehensive income (loss)	$ 1,442	$ (2,281)