Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
REVENUES	$ 580,023	$ 607,438	$ 730,133
OPERATING EXPENSES
Salaries, wages and benefits	175,383	184,644	188,884
Fuel	49,376	53,928	150,003
Maintenance, materials and repairs	97,053	97,540	86,929
Depreciation and amortization	91,749	84,477	91,063
Travel	18,693	22,683	28,335
Rent	27,468	25,970	25,201
Landing and ramp	11,204	15,973	22,630
Insurance	6,216	7,716	9,309
Impairment of goodwill	52,585	0	2,797
Impairment of acquired intangibles	0	0	2,282
Impairment of aircraft	0	0	22,065
Other operating expenses	37,111	35,819	38,006
Operating Expenses	566,838	528,750	667,504
OPERATING INCOME	13,185	78,688	62,629
OTHER INCOME (EXPENSE)
Interest income	74	136	179
Interest expense	(14,249)	(14,383)	(14,181)
Net gain (loss) on derivative instruments	631	1,879	(4,881)
Write-off of unamortized debt issuance costs	0	0	(2,886)
Other Nonoperating Income (Expense)	(13,544)	(12,368)	(21,769)
EARNINGS (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(359)	66,320	40,860
INCOME TAX EXPENSE	(19,266)	(24,672)	(16,995)
EARNINGS (LOSS) FROM CONTINUING OPERATIONS	(19,625)	41,648	23,865
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAXES	(3)	(774)	(673)
NET EARNINGS (LOSS)	$ (19,628)	$ 40,874	$ 23,192
BASIC EARNINGS (LOSS) PER SHARE
Continuing operations (in dollars per share)	$ (0.31)	$ 0.66	$ 0.38
Discontinued operations (in dollars per share)	$ 0.00	$ (0.02)	$ (0.01)
TOTAL BASIC EARNINGS PER SHARE (in dollars per share)	$ (0.31)	$ 0.64	$ 0.37
DILUTED EARNINGS (LOSS) PER SHARE
Continuing operations (in dollars per share)	$ (0.31)	$ 0.65	$ 0.37
Discontinued operations (in dollars per share)	$ 0.00	$ (0.02)	$ (0.01)
TOTAL DILUTED NET EARNINGS PER SHARE (in dollars per share)	$ (0.31)	$ 0.63	$ 0.36
WEIGHTED AVERAGE SHARES
Basic (in shares)	63,992	63,461	63,284
Diluted (in shares)	63,992	64,420	64,085