11. Stock Option Plan (Options Outstanding And Exercisable) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Options Outstanding, # of shares	196,250
Options Outstanding, WAEP	$ 18.92
Options Outstanding, Aggregate Intrinsic Value	$ 80
Options Exercisable, # of shares	192,050
Options Exercisable, WAEP	$ 19.20
Options Exercisable, Aggregate Intrinsic Value	60
Range Of Exercise Price Two Dollar And Fifty Four Cent To Six Dollar [Member]
Range of exercise price, Lower	$ 2.54
Range of exercise price, Upper	$ 6.00
Options Outstanding, # of shares	22,750
Options Outstanding, WAEP	$ 5.01
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years 5 months 23 days
Options Outstanding, Aggregate Intrinsic Value	74
Options Exercisable, # of shares	19,750
Options Exercisable, WAEP	$ 5.36
Options Exercisable, Aggregate Intrinsic Value	57
Range Of Exercise Price Six Dollar And One Cent To Ten Dollar [Member]
Range of exercise price, Lower	$ 6.01
Range of exercise price, Upper	$ 10.00
Options Outstanding, # of shares	28,200
Options Outstanding, WAEP	$ 9.14
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years 1 month 20 days
Options Outstanding, Aggregate Intrinsic Value	6
Options Exercisable, # of shares	27,000
Options Exercisable, WAEP	$ 9.27
Options Exercisable, Aggregate Intrinsic Value	3
Range Of Exercise Price Ten Dollar And One Cent To Seventeen Dollar And Fifty Cent [Member]
Range of exercise price, Lower	$ 10.01
Range of exercise price, Upper	$ 17.50
Options Outstanding, # of shares	2,300
Options Outstanding, WAEP	$ 17.43
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	8 months 8 days
Options Outstanding, Aggregate Intrinsic Value
Options Exercisable, # of shares	2,300
Options Exercisable, WAEP	$ 17.43
Options Exercisable, Aggregate Intrinsic Value
Range Of Exercise Price Seventeen Dollar And Fifty One Cent To Twenty Dollar [Member]
Range of exercise price, Lower	$ 17.51
Range of exercise price, Upper	$ 20.00
Options Outstanding, # of shares	38,500
Options Outstanding, WAEP	$ 17.80
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years 6 months
Options Outstanding, Aggregate Intrinsic Value
Options Exercisable, # of shares	38,500
Options Exercisable, WAEP	$ 17.80
Options Exercisable, Aggregate Intrinsic Value
Range Of Exercise Price Twenty Dollar And One Cent To Twenty Five Dollar And Ninety Three Cent [Member]
Range of exercise price, Lower	$ 20.01
Range of exercise price, Upper	$ 25.93
Options Outstanding, # of shares	104,500
Options Outstanding, WAEP	$ 25.04
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years 2 months 26 days
Options Exercisable, # of shares	104,500
Options Exercisable, WAEP	$ 25.04
Options Exercisable, Aggregate Intrinsic Value