Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets:
Assets	$ 60,627	$ 57,206
Liabilities:
Foreign exchange contracts	265	9
Lease exit liabilities	8,515	12,550
Total Liabilities	8,780	12,559
Bank time deposits
Assets:
Assets	60,553	46,881
Foreign Exchange Contract
Assets:
Assets	74	255
U.S. and foreign government obligations
Assets:
Assets		1,595
Bankers' acceptances
Assets:
Assets		8,475
Level 2
Assets:
Assets	60,627	57,206
Liabilities:
Foreign exchange contracts	265	9
Total Liabilities	265	9
Level 2 | Bank time deposits
Assets:
Assets	60,553	46,881
Level 2 | Foreign Exchange Contract
Assets:
Assets	74	255
Level 2 | U.S. and foreign government obligations
Assets:
Assets		1,595
Level 2 | Bankers' acceptances
Assets:
Assets		8,475
Level 3
Liabilities:
Lease exit liabilities	8,515	12,550
Total Liabilities	$ 8,515	$ 12,550