LONG-TERM OBLIGATIONS (Tables)

6 Months Ended

Jun. 30, 2015

LONG-TERM OBLIGATIONS

Schedule of long-term obligations

	June 30,			December 31,
	2015			2014
Notes payable 0.61% - 27.26%, due in monthly and annual installments
through 2027	$	4,244		$	5,160
Senior unsecured notes 2.3%, due in 2015	16,000			16,000
Senior unsecured notes 6.0%, due in 2016	50,000			50,000
Senior unsecured notes 6.0%, due in 2018	75,000			75,000
Senior unsecured notes 3.8%, due in 2020	84,000			84,000
Senior unsecured notes 3.2%, due in 2022	75,000			75,000
Senior unsecured notes 3.5%, due in 2023	125,000			125,000
Senior unsecured notes 3.4%, due in 2024	50,000			50,000
Senior unsecured notes 3.5%, due in 2024	100,000			--
Senior unsecured notes 3.6%, due in 2025	125,000			125,000
Senior unsecured notes 3.6%, due in 2026	125,000			--
Capital lease obligations	1,885			2,424
	831,129			607,584
Current maturities of long-term obligations	(18,122		)	(18,692		)
Total long-term obligations	$	813,007		$	588,892