Allowance for Credit Losses and Credit Quality - Allowance for Credit Losses and Financing Receivables by Subsidiary Classified According to Impairment Evaluation Method (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses: Individually evaluated for impairment
Allowance for credit losses: Collectively evaluated for impairment	14,483		15,379
Allowance for credit losses: Contracts acquired with deteriorated credit quality
Allowance for credit losses, Ending balance	14,483	14,565	15,379	15,576	14,747	14,038
Financing receivables: Individually evaluated for impairment
Financing receivables: Collectively evaluated for impairment	180,122		177,648
Financing receivables: Contracts acquired with deteriorated credit quality
Financing receivables, Ending balance	180,122		177,648
Lease-Comm Microticket Equipment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses: Individually evaluated for impairment
Allowance for credit losses: Collectively evaluated for impairment	71		91
Allowance for credit losses: Contracts acquired with deteriorated credit quality
Allowance for credit losses, Ending balance	71	69	91	108	98	103
Financing receivables: Individually evaluated for impairment
Financing receivables: Collectively evaluated for impairment	154		185
Financing receivables: Contracts acquired with deteriorated credit quality
Financing receivables, Ending balance	154		185
Time-Payment Microticket Equipment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses: Individually evaluated for impairment
Allowance for credit losses: Collectively evaluated for impairment	14,412		15,288
Allowance for credit losses: Contracts acquired with deteriorated credit quality
Allowance for credit losses, Ending balance	14,412	14,496	15,288	15,468	14,649	13,935
Financing receivables: Individually evaluated for impairment
Financing receivables: Collectively evaluated for impairment	179,968		177,463
Financing receivables: Contracts acquired with deteriorated credit quality
Financing receivables, Ending balance	$ 179,968		$ 177,463