Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUES	$ 140,877	$ 153,826	$ 423,060	$ 452,886
OPERATING EXPENSES
Salaries, wages and benefits	41,498	44,153	126,771	135,827
Fuel	11,356	12,038	38,157	39,962
Maintenance, materials and repairs	24,644	26,751	71,783	75,135
Depreciation and amortization	23,392	21,057	66,077	62,871
Travel	4,409	5,618	13,908	17,162
Rent	6,958	6,745	20,528	18,719
Landing and ramp	2,227	3,877	8,264	11,823
Insurance	1,559	1,944	4,466	5,780
Other operating expenses	8,224	9,348	25,914	27,908
Operating Expenses	124,267	131,531	375,868	395,187
OPERATING INCOME	16,610	22,295	47,192	57,699
OTHER INCOME (EXPENSE)
Interest income	17	38	56	104
Interest expense	(3,814)	(3,668)	(10,500)	(10,886)
Net gain (loss) on derivative instruments	(317)	294	425	956
Other Nonoperating Income (Expense)	(4,114)	(3,336)	(10,019)	(9,826)
EARNINGS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	12,496	18,959	37,173	47,873
INCOME TAX EXPENSE	(4,697)	(7,403)	(13,958)	(18,436)
EARNINGS FROM CONTINUING OPERATIONS	7,799	11,556	23,215	29,437
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAXES	0	(186)	(2)	(576)
NET EARNINGS	$ 7,799	$ 11,370	$ 23,213	$ 28,861
BASIC EARNINGS PER SHARE
Continuing operations (in dollars per share)	$ 0.12	$ 0.18	$ 0.36	$ 0.46
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00	$ 0.00	$ (0.01)
TOTAL BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.12	$ 0.18	$ 0.36	$ 0.45
DILUTED EARNINGS PER SHARE
Continuing operations (in dollars per share)	$ 0.12	$ 0.18	$ 0.36	$ 0.46
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00	$ 0.00	$ (0.01)
TOTAL DILUTED NET EARNINGS PER SHARE (in dollars per share)	$ 0.12	$ 0.18	$ 0.36	$ 0.45
WEIGHTED AVERAGE SHARES
Basic (in shares)	64,052	63,456	63,972	63,439
Diluted (in shares)	65,036	64,667	64,807	64,478