XML 113 R82.htm IDEA: XBRL DOCUMENT v2.4.0.6
Investments at Fair Value for Company Sponsored Pension Benefit Plans Within Fair Value Hierarchy (Detail) (PENSION BENEFIT PLANS, USD $)
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 218,557,000 $ 216,650,000 $ 182,477,000
Cash and cash equivalents
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 9,843,000 12,631,000  
Common and collective trusts | International small cap
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10,588,000 11,706,000  
Common and collective trusts | Global/International equity
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 13,748,000 15,488,000  
Common and collective trusts | Domestic equity - small/mid cap
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 15,939,000 18,744,000  
Common and collective trusts | International equity emerging markets
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14,602,000 17,333,000  
Common stock | Industrials
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,545,000 7,439,000  
Common stock | Energy
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,595,000 8,888,000  
Common stock | Consumer
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 9,714,000 9,775,000  
Common stock | Healthcare
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,321,000 5,718,000  
Common stock | Finance
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10,235,000 11,527,000  
Common stock | Utilities
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,234,000 5,269,000  
Common stock | Information technology
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,847,000 8,309,000  
Common stock | Foreign
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,000,000 5,299,000  
Mutual funds | Foreign large blend
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 15,048,000 16,674,000  
Mutual funds | Long-term bond fund
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 99,728,000 70,695,000  
Corporate debt securities
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,045,000 1,290,000  
Investments
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 227,032,000 226,785,000  
Payable held under securities lending agreement
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets (8,475,000) (10,135,000)  
Fair Value, Inputs, Level 1 | Cash and cash equivalents
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 9,843,000 12,631,000  
Fair Value, Inputs, Level 1 | Common stock | Industrials
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,545,000 7,439,000  
Fair Value, Inputs, Level 1 | Common stock | Energy
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,595,000 8,888,000  
Fair Value, Inputs, Level 1 | Common stock | Consumer
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 9,714,000 9,775,000  
Fair Value, Inputs, Level 1 | Common stock | Healthcare
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,321,000 5,718,000  
Fair Value, Inputs, Level 1 | Common stock | Finance
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10,235,000 11,527,000  
Fair Value, Inputs, Level 1 | Common stock | Utilities
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,234,000 5,269,000  
Fair Value, Inputs, Level 1 | Common stock | Information technology
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 4,847,000 8,309,000  
Fair Value, Inputs, Level 1 | Common stock | Foreign
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 5,000,000 5,299,000  
Fair Value, Inputs, Level 1 | Mutual funds | Foreign large blend
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 15,048,000 16,674,000  
Fair Value, Inputs, Level 1 | Mutual funds | Long-term bond fund
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 99,728,000 70,695,000  
Fair Value, Inputs, Level 1 | Investments
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 171,110,000 162,224,000  
Fair Value, Inputs, Level 2 | Common and collective trusts | International small cap
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 10,588,000 11,706,000  
Fair Value, Inputs, Level 2 | Common and collective trusts | Global/International equity
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 13,748,000 15,488,000  
Fair Value, Inputs, Level 2 | Common and collective trusts | Domestic equity - small/mid cap
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 15,939,000 18,744,000  
Fair Value, Inputs, Level 2 | Common and collective trusts | International equity emerging markets
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 14,602,000 17,333,000  
Fair Value, Inputs, Level 2 | Corporate debt securities
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,045,000 1,290,000  
Fair Value, Inputs, Level 2 | Investments
      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 55,922,000 $ 64,561,000