Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets:
Bank time deposits	$ 39,602	$ 79,078
U.S. and foreign government obligations	969	22,143
Bankers' acceptances	8,913	7,337
Foreign exchange contracts	50	36
Total Assets	49,534	108,594
Liabilities:
Foreign exchange contracts	17	70
Lease exit liabilities	14,362	14,233
Total Liabilities	14,379	14,303
Level 2
Assets:
Bank time deposits	39,602	79,078
U.S. and foreign government obligations	969	22,143
Bankers' acceptances	8,913	7,337
Foreign exchange contracts	50	36
Total Assets	49,534	108,594
Liabilities:
Foreign exchange contracts	17	70
Total Liabilities	17	70
Level 3
Liabilities:
Lease exit liabilities	14,362	14,233
Total Liabilities	$ 14,362	$ 14,233