Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
REVENUES	$ 143,593	$ 143,279
OPERATING EXPENSES
Salaries, wages and benefits	43,065	43,309
Fuel	12,260	14,361
Maintenance, materials and repairs	24,879	22,134
Depreciation and amortization	24,979	20,920
Travel	4,573	4,727
Rent	7,310	6,779
Landing and ramp	2,738	4,065
Insurance	1,205	1,511
Other operating expenses	8,748	9,060
Operating Expenses	129,757	126,866
OPERATING INCOME	13,836	16,413
OTHER INCOME (EXPENSE)
Interest income	19	21
Interest expense	(3,823)	(3,132)
Net gain on derivative instruments	299	290
Other Nonoperating Income (Expense)	(3,505)	(2,821)
EARNINGS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	10,331	13,592
INCOME TAX EXPENSE	(3,809)	(5,091)
EARNINGS FROM CONTINUING OPERATIONS	6,522	8,501
EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS, NET OF TAXES	211	(1)
NET EARNINGS	$ 6,733	$ 8,500
BASIC EARNINGS PER SHARE
Continuing operations (in dollars per share)	$ 0.10	$ 0.13
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00
TOTAL BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.10	$ 0.13
DILUTED EARNINGS PER SHARE
Continuing operations (in dollars per share)	$ 0.10	$ 0.13
Discontinued operations (in dollars per share)	$ 0.00	$ 0.00
TOTAL DILUTED NET EARNINGS PER SHARE (in dollars per share)	$ 0.10	$ 0.13
WEIGHTED AVERAGE SHARES
Basic (in shares)	64,148	63,810
Diluted (in shares)	65,141	64,524