Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
REVENUES	$ 253,211	$ 176,549	$ 491,128	$ 353,934
OPERATING EXPENSES
Salaries, wages and benefits	66,010	53,647	138,673	106,066
Fuel	32,258	17,168	67,099	33,799
Maintenance, materials and repairs	37,588	30,345	67,870	60,772
Depreciation and amortization	37,781	33,132	74,223	65,666
Travel	6,820	4,678	14,186	9,486
Contracted ground and aviation services	32,151	8,931	52,838	19,799
Rent	3,753	2,579	7,039	5,206
Landing and ramp	4,357	2,652	9,656	6,303
Insurance	955	1,087	2,217	2,236
Other operating expenses	8,590	6,529	16,626	13,449
Operating Expenses	230,263	160,748	450,427	322,782
OPERATING INCOME	22,948	15,801	40,701	31,152
OTHER INCOME (EXPENSE)
Interest income	16	37	48	61
Interest expense	(3,759)	(2,633)	(7,307)	(5,332)
Net gain (loss) on financial instruments	(67,649)	5,558	(65,780)	5,030
Other Nonoperating Income (Expense)	(71,392)	2,962	(73,039)	(241)
EARNINGS (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(48,444)	18,763	(32,338)	30,911
INCOME TAX EXPENSE	(5,474)	(7,235)	(11,784)	(11,212)
EARNINGS (LOSS) FROM CONTINUING OPERATIONS	(53,918)	11,528	(44,122)	19,699
EARNINGS FROM DISCONTINUED OPERATIONS, NET OF TAXES	192	47	384	94
NET EARNINGS (LOSS)	$ (53,726)	$ 11,575	$ (43,738)	$ 19,793
BASIC EARNINGS (LOSS) PER SHARE
Basic earnings per share from continuing operations (in dollars per share)	$ (0.91)	$ 0.18	$ (0.75)	$ 0.31
Discontinued operations (in dollars per share)	0.00	0.00	0.01	0.00
TOTAL BASIC EARNINGS PER SHARE (in dollars per share)	(0.91)	0.18	(0.74)	0.31
DILUTED EARNINGS (LOSS) PER SHARE
Diluted earnings per share from continuing operations (in dollars per share)	(0.91)	0.12	(0.75)	0.25
Discontinued operations (in dollars per share)	0.00	0.00	0.01	0.00
TOTAL DILUTED NET EARNINGS PER SHARE (in dollars per share)	$ (0.91)	$ 0.12	$ (0.74)	$ 0.25
WEIGHTED AVERAGE SHARES
Basic (in shares)	59,035	63,267	59,084	63,452
Diluted (in shares)	59,035	66,763	59,084	65,910