Accounts Receivable Net of Allowances (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Accounts receivable, net of allowances	$ 74,157	$ 87,471
Customer
Financing Receivable, Impaired [Line Items]
Accounts receivable, net of allowances	7,840	5,384
Corporate
Financing Receivable, Impaired [Line Items]
Accounts receivable, net of allowances	17,215	29,650
Franchise
Financing Receivable, Impaired [Line Items]
Accounts receivable, net of allowances	$ 49,102	$ 52,437