Note 8. Employee Benefit Plans (Detail) - Components Of Net Periodic Benefit Cost To Be Recognized Over Next Fiscal Year (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Pension Benefits [Member]
Amortization of net (gain)/loss	$ 2,826
Amortization of prior service cost	401
Other Benefits [Member]
Amortization of net (gain)/loss	(30)
Amortization of prior service cost	$ 44