Quarterly Financial Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 759,742		$ 707,564		$ 672,510		$ 585,423		$ 553,852		$ 537,224		$ 550,545		$ 593,010		$ 2,725,239	$ 2,234,631	$ 2,212,827
Gross Profit	331,837	[1]	322,686	[1]	319,405	[1]	292,393	[1]	263,080	[1]	265,056	[1]	282,276	[1]	302,439	[1]
Earnings Before Income Taxes	34,233		13,199		13,562		60,710		34,111		29,420		40,387		81,042		121,704	184,960	276,855
Net Earnings	$ 22,094		$ 9,295		$ 8,505		$ 38,339		$ 22,674		$ 21,138		$ 25,854		$ 51,000		$ 78,233	$ 120,666	$ 173,043
Earnings Per Share	$ 0.30		$ 0.13		$ 0.12		$ 0.53		$ 0.30		$ 0.28		$ 0.34		$ 0.67		$ 1.08	$ 1.59	$ 2.28
Earnings Per Share Assuming Dilution	$ 0.30		$ 0.13		$ 0.12		$ 0.53		$ 0.30		$ 0.28		$ 0.34		$ 0.67		$ 1.08	$ 1.58	$ 2.25

[1] Gross profit is the sum of lease revenues and fees, retail sales, and non-retail sales less retail cost of sales, non-retail cost of sales, depreciation of lease merchandise and write-offs of lease merchandise.