XML 67 R56.htm IDEA: XBRL DOCUMENT ﻿
v2.3.0.11

Retirement Plans (Weighted-Average Expense Assumptions) (Details) | 6 Months Ended
--- | ---
Jun. 30, 2011 | Jun. 30, 2010
Retirement Income Plan [Member] |  |
Discount rate | 5.55% | 5.93%
Expected return on plan assets | 8.00% | 8.00%
Rate of compensation increase | 4.00% | 4.00%
Retirement Life Plan [Member] |  |
Discount rate | 5.55% | 5.93%
Expected return on plan assets | 0.00% | 0.00%
Rate of compensation increase | 0.00% | 0.00%

X
- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Namespace Prefix: | us-gaap
Data Type: | us-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Namespace Prefix: | us-gaap
Data Type: | us-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph j + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
Namespace Prefix: | us-gaap
Data Type: | us-types:percentItemType
Balance Type: | na
Period Type: | duration