Accounting For Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense	$ 95,000	$ 95,000	$ 349,000	$ 343,000
Unrecognized compensation cost related to non-vested equity based compensation	725,000		725,000
Unrecognized equity based compensation weighted average period, years			1 year 7 months 24 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense	60,000	56,000	190,000	169,000
Shares of common stock reserved for stock based benefits	1,056,689		1,056,689
Vesting period, years			4 years
Increase in authorized shares			350,000
Number of shares available for future issuance	530,905		530,905
Weighted average remaining contractual term, years			3 years 11 months 5 days
Aggregate intrinsic value for all options outstanding	311,189		311,189
Weighted average remaining contractual term for exercisable options, years			2 years 10 months 21 days
Aggregate intrinsic value of exercisable options	235,205		235,205
Proceeds from exercise of stock options				12,000
Stock Options [Member] | Contractual Term Seven Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration of stock options from date of grant, years			7 years
Stock Options [Member] | Contractual Term Ten Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration of stock options from date of grant, years			10 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense	13,000	20,000	43,000	62,000
Number of shares available for future issuance	166,582		166,582
Maximum contribution per plan year			6,500
Employees can purchase stock at the percentage rate of the lower of the market price on the first or last day of the offering period			85.00%
Share issuances for compensation purposes, shares			19,759	25,003
Employee Stock Purchase Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deduction for employee stock purchase plan percentage			1.00%
Employee Stock Purchase Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payroll deduction for employee stock purchase plan percentage			10.00%
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense	22,000	19,000	75,000	72,000
Vesting period, years			4 years
Aggregate intrinsic value for all options outstanding	284,000		284,000
Restricted stock units to common stock ratio, shares entitled			1
Stock Grant Plan For Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense			$ 41,000	$ 40,000
Shares of common stock reserved for stock based benefits	30,000		30,000
Number of shares available for future issuance	11,000		11,000
Number of shares granted for non-employee directors upon re-election			1,000
Plan expiration date			May 19, 2018
Share issuances for compensation purposes, shares			5,000