Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Leasing revenues:
Operating leases	$ 134,054	$ 119,481
Finance leases	3,098	3,698
Total leasing revenues	137,152	123,179
Equipment trading revenues	18,286	14,461
Management fee income	619	660
Other revenues	18	32
Total revenues	156,075	138,332
Operating expenses (income):
Equipment trading expenses	15,611	12,563
Direct operating expenses	5,962	5,581
Administrative expenses	11,904	11,106
Depreciation and amortization	49,317	45,205
(Reversal) provision for doubtful accounts	(82)	14
Net (gain) on sale of leasing equipment	(10,261)	(10,760)
Total operating expenses	72,451	63,709
Operating income	83,624	74,623
Other expenses:
Interest and debt expense	28,883	26,625
Net (gain) on interest rate swaps	(3,152)	(2,972)
Total other expenses	25,731	23,653
Income before income taxes	57,893	50,970
Income tax expense	20,373	18,043
Net income	$ 37,520	$ 32,927
Net income per common share-Basic (in dollars per share)	$ 1.12	$ 0.99
Net income per common share-Diluted (in dollars per share)	$ 1.12	$ 0.98
Cash dividends paid per common share (in dollars per share)	$ 0.64	$ 0.55
Weighted average number of common shares outstanding-Basic (in shares)	33,469	33,192
Dilutive stock options and restricted stock (in shares)	172	386
Weighted average number of common shares outstanding-Diluted (in shares)	33,641	33,578