Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
REVENUES	$ 148,353	$ 149,618	$ 295,378	$ 293,211
OPERATING EXPENSES
Salaries, wages and benefits	42,036	40,895	85,715	83,960
Fuel	12,275	14,014	23,053	26,274
Maintenance, materials and repairs	23,993	23,168	46,686	48,047
Depreciation and amortization	31,400	27,142	60,393	52,121
Travel	4,342	4,419	8,765	8,992
Rent	2,447	6,924	6,654	14,234
Landing and ramp	2,166	2,576	4,874	5,314
Insurance	546	1,573	1,804	2,778
Other operating expenses	9,354	10,790	20,111	19,538
Operating Expenses	128,559	131,501	258,055	261,258
OPERATING INCOME	19,794	18,117	37,323	31,953
OTHER INCOME (EXPENSE)
Interest income	24	24	46	43
Interest expense	(2,839)	(3,481)	(5,904)	(7,304)
Net gain (loss) on derivative instruments	264	31	251	330
Other Nonoperating Income (Expense)	(2,551)	(3,426)	(5,607)	(6,931)
EARNINGS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	17,243	14,691	31,716	25,022
INCOME TAX EXPENSE	(6,673)	(5,393)	(12,251)	9,202
EARNINGS FROM CONTINUING OPERATIONS	10,570	9,298	19,465	15,820
EARNINGS FROM DISCONTINUED OPERATIONS, NET OF TAXES	214	211	428	422
NET EARNINGS	$ 10,784	$ 9,509	$ 19,893	$ 16,242
BASIC EARNINGS PER SHARE
Continuing operations (in dollars per share)	$ 0.16	$ 0.14	$ 0.30	$ 0.25
Discontinued operations (in dollars per share)	0.01	0.01	0.01	0.00
TOTAL BASIC EARNINGS PER SHARE (in dollars per share)	0.17	0.15	0.31	0.25
DILUTED EARNINGS PER SHARE
Continuing operations (in dollars per share)	0.16	0.14	0.30	0.24
Discontinued operations (in dollars per share)	0.00	0.01	0.00	0.01
TOTAL DILUTED NET EARNINGS PER SHARE (in dollars per share)	$ 0.16	$ 0.15	$ 0.30	$ 0.25
WEIGHTED AVERAGE SHARES
Basic (in shares)	64,541	64,285	64,498	64,217
Diluted (in shares)	65,471	65,207	65,404	65,174