Stock-Based Compensation (Options Outstanding & Exercisable) (Details) - Jun. 30, 2015 - USD ($)	Total
Number of Common Shares Subject to Options (in shares)
Outstanding at January 1	38,577
Expired	14,880
June 30, 2015	23,697
Number of common shares subject to options, exercisable (in shares)	23,697
Weighted-Average Exercise Price (in dollars per share)
Outstanding at January 1	$ 28.09
Expired	27.04
June 30, 2015	28.75
Weighted-average exercise price, exercisable (in dollars per share)	$ 28.75
Additional Disclosures
Weighted-average remaining contractual life, outstanding	8 months 12 days
Weighted-average remaining contractual life, exercisable	8 months 12 days
Aggregate intrinsic value, outstanding	$ 0
Aggregate intrinsic value, exercisable	$ 0
Common Shares Subject to Options Outstanding & Exercisable (in shares)	23,697.000
Weighted-Average Remaining Contractual Life	8 months 12 days
Weighted-Average Exercise Price (in dollars per share)	$ 28.75
Range of Exercise Price $28.25
Additional Disclosures
Range of exercise prices, minimum (in dollars per share)	$ 28.25
Common Shares Subject to Options Outstanding & Exercisable (in shares)	13,697
Weighted-Average Remaining Contractual Life	7 months 6 days
Weighted-Average Exercise Price (in dollars per share)	$ 28.25
Range of Exercise Price $28.56 - $30.00
Additional Disclosures
Range of exercise prices, minimum (in dollars per share)	28.56
Range of exercise prices, maximum (in dollars per share)	$ 30
Common Shares Subject to Options Outstanding & Exercisable (in shares)	10,000
Weighted-Average Remaining Contractual Life	10 months 24 days
Weighted-Average Exercise Price (in dollars per share)	$ 29.43