Allowance for Credit Losses and Credit Quality - Allowance for Credit Losses by Portfolio Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses, Beginning balance	$ 15,576	$ 13,030	$ 14,038	$ 13,180
Charge-offs	(6,126)	(5,696)	(17,304)	(17,917)
Recoveries	1,294	1,178	4,386	3,805
Provisions	4,790	4,847	14,414	14,291
Allowance for credit losses, Ending balance	15,534	13,359	15,534	13,359
Lease-Comm Microticket Equipment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses, Beginning balance	108	126	103	162
Charge-offs	(84)	(121)	(254)	(454)
Recoveries	37	68	126	205
Provisions	37	38	123	198
Allowance for credit losses, Ending balance	98	111	98	111
Time-Payment Microticket Equipment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses, Beginning balance	15,468	12,904	13,935	13,018
Charge-offs	(6,042)	(5,575)	(17,050)	(17,463)
Recoveries	1,257	1,110	4,260	3,600
Provisions	4,753	4,809	14,291	14,093
Allowance for credit losses, Ending balance	$ 15,436	$ 13,248	$ 15,436	$ 13,248