Pension and Other Postretirement Benefits (Details 7) (U.S. Pension Benefits [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	$ 140,218	[1]	$ 133,403	[1]	$ 135,730	[1]
Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	52,119		48,387
Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	51,545		49,796
Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	36,554		35,220
Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	77,080		71,987
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	40,713		38,473
Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	36,367		33,514
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Fixed-Income Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	20,921		20,776
Fixed-Income Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	6,439		7,676
Fixed-Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	14,482		13,100
Fixed-Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Alternative Investments [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	36,554		35,220
Alternative Investments [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Alternative Investments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Alternative Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	36,554		35,220
Other (primarily cash and cash equivalents) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,663		5,420
Other (primarily cash and cash equivalents) [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	4,967		2,238
Other (primarily cash and cash equivalents) [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	696		3,182
Other (primarily cash and cash equivalents) [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Bank and financial services [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			1,881
Bank and financial services [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			1,881
Bank and financial services [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			0
Bank and financial services [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			0
Bank and financial services [Member] | International [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,255
Bank and financial services [Member] | International [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,255
Bank and financial services [Member] | International [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Bank and financial services [Member] | International [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Capital goods [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,269		1,448
Capital goods [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,269		1,448
Capital goods [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Capital goods [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Chemicals [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,864		1,626
Chemicals [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,864		1,626
Chemicals [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Chemicals [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commercial property [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,919		1,769
Commercial property [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,919		1,769
Commercial property [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commercial property [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commercial services [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,192		1,331
Commercial services [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,192		1,331
Commercial services [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commercial services [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Common collective trust funds [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	30,451		28,165
Common collective trust funds [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Common collective trust funds [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	30,451		28,165
Common collective trust funds [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Common collective trust funds [Member] | International [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,916		5,349
Common collective trust funds [Member] | International [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Common collective trust funds [Member] | International [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,916		5,349
Common collective trust funds [Member] | International [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Electronics [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,208		1,003
Electronics [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,208		1,003
Electronics [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Electronics [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Engineering and construction [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	794
Engineering and construction [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	794
Engineering and construction [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Engineering and construction [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Food processing [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	3,549		3,221
Food processing [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	3,549		3,221
Food processing [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Food processing [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Health care [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	830		1,300
Health care [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	830		1,300
Health care [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Health care [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Limited partnerships - public equity [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	7,251		7,253
Limited partnerships - public equity [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	7,251		7,253
Limited partnerships - public equity [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Limited partnerships - public equity [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Manufacturing [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,868		1,782
Manufacturing [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,868		1,782
Manufacturing [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Manufacturing [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Oil and gas [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	3,322		2,904
Oil and gas [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	3,322		2,904
Oil and gas [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Oil and gas [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Retail [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	870
Retail [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	870
Retail [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Retail [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Technology [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	879		1,608
Technology [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	879		1,608
Technology [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Technology [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Technology [Member] | International [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,004
Technology [Member] | International [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,004
Technology [Member] | International [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Technology [Member] | International [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Wholesale distribution [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			1,017
Wholesale distribution [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			1,017
Wholesale distribution [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			0
Wholesale distribution [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets			0
Energy [Member] | International [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	763
Energy [Member] | International [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	763
Energy [Member] | International [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Energy [Member] | International [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0
Other (represents 11 business sectors) [Member] | U.S. [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,196		6,057
Other (represents 11 business sectors) [Member] | U.S. [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,196		6,057
Other (represents 11 business sectors) [Member] | U.S. [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Other (represents 11 business sectors) [Member] | U.S. [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Real estate [Member] | International [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,929		1,654
Real estate [Member] | International [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	1,929		1,654
Real estate [Member] | International [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Real estate [Member] | International [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commingled funds [Member] | Fixed-Income Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	14,482		13,100
Commingled funds [Member] | Fixed-Income Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commingled funds [Member] | Fixed-Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	14,482		13,100
Commingled funds [Member] | Fixed-Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commingled funds [Member] | Other (primarily cash and cash equivalents) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	696		3,182
Commingled funds [Member] | Other (primarily cash and cash equivalents) [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Commingled funds [Member] | Other (primarily cash and cash equivalents) [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	696		3,182
Commingled funds [Member] | Other (primarily cash and cash equivalents) [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Other (represents 10 business sectors) [Member] | International [Member] | Equity Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	3,751		2,619
Other (represents 10 business sectors) [Member] | International [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	3,751		2,619
Other (represents 10 business sectors) [Member] | International [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Other (represents 10 business sectors) [Member] | International [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Preferred (represents 3 business sectors) [Member] | Fixed-Income Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,755		6,481
Preferred (represents 3 business sectors) [Member] | Fixed-Income Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	5,755		6,481
Preferred (represents 3 business sectors) [Member] | Fixed-Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Preferred (represents 3 business sectors) [Member] | Fixed-Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Other (represents 1 business sector) [Member] | Fixed-Income Securities [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	684		1,195
Other (represents 1 business sector) [Member] | Fixed-Income Securities [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	684		1,195
Other (represents 1 business sector) [Member] | Fixed-Income Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Other (represents 1 business sector) [Member] | Fixed-Income Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Managed Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	30,064		29,280		0
Managed Funds [Member] | Alternative Investments [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	30,064	[2]	29,280	[3]
Managed Funds [Member] | Alternative Investments [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0	[2]	0	[3]
Managed Funds [Member] | Alternative Investments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0	[2]	0	[3]
Managed Funds [Member] | Alternative Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	30,064	[2]	29,280	[3]
Hedge and absolute return funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	6,490		5,940		5,951
Hedge and absolute return funds [Member] | Alternative Investments [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	6,490		5,940
Hedge and absolute return funds [Member] | Alternative Investments [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Hedge and absolute return funds [Member] | Alternative Investments [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Hedge and absolute return funds [Member] | Alternative Investments [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	6,490		5,940
Mutual funds [Member] | Other (primarily cash and cash equivalents) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	2,944		1,906
Mutual funds [Member] | Other (primarily cash and cash equivalents) [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	2,944		1,906
Mutual funds [Member] | Other (primarily cash and cash equivalents) [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Mutual funds [Member] | Other (primarily cash and cash equivalents) [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0		0
Other [Member] | Other (primarily cash and cash equivalents) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	2,023	[4]	332	[4]
Other [Member] | Other (primarily cash and cash equivalents) [Member] | Quoted Prices in Active Markets for Identical Inputs (Level 1) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	2,023	[4]	332	[4]
Other [Member] | Other (primarily cash and cash equivalents) [Member] | Significant Other Observable Inputs (Level 2) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	0	[4]	0	[4]
Other [Member] | Other (primarily cash and cash equivalents) [Member] | Significant Unobservable Inputs (Level 3) [Member]
Asset categories based on the nature and risks of the plans assets
Asset categories based on the nature and risks of the plans assets	$ 0	[4]	$ 0	[4]

[1] Includes the non-qualified defined benefit pension plan.

[2] Includes approximately 57% in equity and equity-like asset securities, 32% in alternative investments (real assets, commodities and resources, absolute return funds), 10% fixed income securities and 1% in cash and cash equivalents.

[3] Includes approximately 54% in equity and equity-like asset securities, 35% in alternative investments (real assets, commodities and resources, absolute return funds), 10% fixed income securities and 1% in cash and cash equivalents.

[4] Includes accrued receivables and pending broker settlements.