13. Employee Benefits (Other Information Regarding Options Outstanding And Exercisable) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, # of shares	185,410
Options Outstanding, WAEP	$ 19.59
Options Outstanding, Aggregate Intrinsic Value	$ 108,000
Options Exercisable, # of shares	182,810
Options Exercisable, WAEP	$ 19.82
Options Exercisable, Aggregate Intrinsic Value	91,000
Range Of Exercise Price Two Dollar And Fifty Four Cent To Six Dollar [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, Lower	$ 2.54
Range of exercise price, Upper	$ 6.00
Options Outstanding, # of shares	16,950
Options Outstanding, WAEP	$ 4.69
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years 9 months 11 days
Options Outstanding, Aggregate Intrinsic Value	88,000
Options Exercisable, # of shares	14,950
Options Exercisable, WAEP	$ 4.98
Options Exercisable, Aggregate Intrinsic Value	74,000
Range Of Exercise Price Six Dollar And One Cent To Ten Dollar [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, Lower	$ 6.01
Range of exercise price, Upper	$ 10.00
Options Outstanding, # of shares	23,160
Options Outstanding, WAEP	$ 9.07
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years 2 months 23 days
Options Outstanding, Aggregate Intrinsic Value	20,000
Options Exercisable, # of shares	22,560
Options Exercisable, WAEP	$ 9.14
Options Exercisable, Aggregate Intrinsic Value	17,000
Range Of Exercise Price Ten Dollar And One Cent To Seventeen Dollar And Fifty Cent [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
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)	1 month 28 days
Options Outstanding, Aggregate Intrinsic Value	0
Options Exercisable, # of shares	2,300
Options Exercisable, WAEP	$ 17.43
Options Exercisable, Aggregate Intrinsic Value	0
Range Of Exercise Price Seventeen Dollar And Fifty One Cent To Twenty Dollar [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise price, Lower	$ 17.51
Range of exercise price, Upper	$ 20.00
Options Outstanding, # of shares	38,500
Options Outstanding, WAEP	$ 17.8
Options Outstanding, Wted. Avg. Remaining Contractual Life (yrs)	3 years
Options Outstanding, Aggregate Intrinsic Value	0
Options Exercisable, # of shares	38,500
Options Exercisable, WAEP	$ 8
Options Exercisable, Aggregate Intrinsic Value	0
Range Of Exercise Price Twenty Dollar And One Cent To Twenty Five Dollar And Ninety Three Cent [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
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)	2 years 8 months 27 days
Options Outstanding, Aggregate Intrinsic Value	0
Options Exercisable, # of shares	104,500
Options Exercisable, WAEP	$ 25.04
Options Exercisable, Aggregate Intrinsic Value	$ 0