Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets:
Bank time deposits	$ 34,130	$ 79,078
U.S. and foreign government obligations	950	22,143
Bankers' acceptances	8,172	7,337
Foreign exchange contracts	14	36
Total Assets	43,266	108,594
Liabilities:
Foreign exchange contracts	151	70
Lease exit liabilities	15,817	14,233
Total Liabilities	15,968	14,303
Level 2
Assets:
Bank time deposits	34,130	79,078
U.S. and foreign government obligations	950	22,143
Bankers' acceptances	8,172	7,337
Foreign exchange contracts	14	36
Total Assets	43,266	108,594
Liabilities:
Foreign exchange contracts	151	70
Total Liabilities	151	70
Level 3
Liabilities:
Lease exit liabilities	15,817	14,233
Total Liabilities	$ 15,817	$ 14,233