Capital Stock, Stock Awards, and Stock Options (Stock Options Rollforward) (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning of year, Number of Shares	121,694	125,694	129,044
Granted, Number of Shares	55,000	15,000	7,500
Exercised, Number of Shares	(19,125)	(14,500)	0
Expired or forfeited, Number of Shares	(5,875)	(4,500)	(10,850)
End of year, Number of Shares	151,694	121,694	125,694
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning of year, Average Option Price (in dollars per share)	$ 469.76	$ 478.32	$ 494.95
Granted, Average Option Price (in dollars per share)	$ 1,070.43	$ 373.03	$ 378.00
Exercised, Average Option Price (in dollars per share)	$ 409.44	$ 391.83	$ 0
Expired or forfeited, Average Option Price (in dollars per share)	$ 791.81	$ 637.53	$ 605.82
End of year, Average Option Price (in dollars per share)	$ 682.68	$ 469.76	$ 478.32