Capital Stock, Stock Awards, and Stock Options (Options Outstanding and Exercisable) (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	151,694	121,694	125,694	129,044
Options Outstanding, Weighted Average Remaining Contractual Life	7 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 682.68	$ 469.76	$ 478.32	$ 494.95
Options Exercisable, Shares Exercisable	70,194
Options Exercisable, Weighted Average Remaining Contractual Life	5 years 7 months 6 days
Options Exercisable, Weighted Average Exercise Price	$ 427.47
Exercise Price Range of $369-$396 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	32,000
Options Outstanding, Weighted Average Remaining Contractual Life	6 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 383.37
Options Exercisable, Shares Exercisable	18,000
Options Exercisable, Weighted Average Remaining Contractual Life	5 years 9 months 18 days
Options Exercisable, Weighted Average Exercise Price	$ 390.58
Exercise Price Range of $419-$439 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	10,694
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 6 months
Options Outstanding, Weighted Average Exercise Price	$ 423.05
Options Exercisable, Shares Exercisable	10,694
Options Exercisable, Weighted Average Remaining Contractual Life	4 years 6 months
Options Exercisable, Weighted Average Exercise Price	$ 423.05
Exercise Price $503 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	50,000
Options Outstanding, Weighted Average Remaining Contractual Life	6 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 502.58
Options Exercisable, Shares Exercisable	37,500
Options Exercisable, Weighted Average Remaining Contractual Life	6 years 2 months 12 days
Options Exercisable, Weighted Average Exercise Price	$ 502.58
Exercise Price $652-$653 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	7,000
Options Outstanding, Weighted Average Remaining Contractual Life	7 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 659.65
Options Exercisable, Shares Exercisable	2,000
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 4 months 24 days
Options Exercisable, Weighted Average Exercise Price	$ 651.91
Exercise Price $730 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	2,000
Options Outstanding, Weighted Average Remaining Contractual Life	1 year 10 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 729.67
Options Exercisable, Shares Exercisable	2,000
Options Exercisable, Weighted Average Remaining Contractual Life	1 year 10 months 24 days
Options Exercisable, Weighted Average Exercise Price	$ 729.67
Exercise Price $1,111 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Shares Outstanding	50,000
Options Outstanding, Weighted Average Remaining Contractual Life	9 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 1,111.20
Options Exercisable, Shares Exercisable	0
Options Exercisable, Weighted Average Remaining Contractual Life	0 years
Options Exercisable, Weighted Average Exercise Price	$ 0.00