XML 52 R111.htm IDEA: XBRL DOCUMENT

Weighted average assumptions used to determine net periodic benefit cost (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost [Line Items]
Discount rate	4.75%	5.00%	5.00%
Expected return on plan assets	4.00%	4.50%	4.50%
Rate of compensation increase	0.00%	0.00%	0.00%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References+ Details