Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2012

Long-term Debt

Schedule of long-term debt

Long-term debt consisted of the following as of December 31, 2012 and 2011 (in thousands):

	December 31, 2012			December 31, 2011
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 1.34% to 2.55% through 2013 to 2020, secured by aircraft	$	273,515		$	364,741
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with interest rates ranging from 0.70% to 2.36% through 2013 to 2021, secured by aircraft		434,716			477,241
Notes payable to banks, due in semi-annual installments plus interest at 6.06% to 7.18% through 2021, secured by aircraft		168,937			193,197
Notes payable to a financing company, due in semi-annual installments plus interest at 5.78% to 6.23% through 2019, secured by aircraft		39,548			53,803
Notes payable to banks, due in monthly installments plus interest of 3.15% to 8.18% through 2025, secured by aircraft		665,867			706,463
Notes payable to banks, due in semi-annual installments, plus interest at 6.05% through 2020, secured by aircraft		17,872			19,946
Notes payable to a bank, due in monthly installments interest based on LIBOR plus interest at 2.00% to 4.00% through 2016, secured by aircraft		41,567			—
Long-term debt		1,642,022			1,815,391
Less current maturities		(171,454	)		(208,398	)
Long-term debt, net of current maturities		1,470,568			1,606,993

Schedule of maturities of long-term debt

The aggregate amounts of principal maturities of long-term debt as of December 31, 2012 were as follows (in thousands):

2013	$	171,454
2014		177,390
2015		184,510
2016		188,240
2017		161,735
Thereafter		758,693
	$	1,642,022