Note 7. RETIREMENT BENEFIT PLANS (Detail) - The following table presents the assumptions used to determine the Company’s benefit obligations at (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 PensionBenefit2012	Dec. 31, 2011 PensionBenefit2011	Dec. 31, 2012 OtherBenefit2012	Dec. 31, 2011 OtherBenefit2011
Discount rates	4.80%	5.25%	4.80%	5.25%
Expected long-term return rate on assets	6.00%	7.00%
Medical trend rate pre-65 (initial)			7.50%	7.00%
Medical trend rate post-65 (initial)			7.50%	8.00%
Medical trend rate (ultimate)			5.00%	5.00%
Years to ultimate rate pre-65			8	5
Years to ultimate rate post-65			8	7
Increase in accumulated postretirement benefit obligation (in Dollars)			$ 287	$ 263
Increase in service cost and interest cost (in Dollars)			12	11
Decrease in accumulated postretirement benefit obligation (in Dollars)			246	227
Decrease in service cost and interest cost (in Dollars)			$ 10	$ 10