Accounting For Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense	$ 130,000	$ 148,000	$ 233,000	$ 253,000
Unrecognized compensation cost related to non-vested equity based compensation	775,000		775,000
Unrecognized equity based compensation weighted average period, years			2 years 29 days
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity based compensation expense	64,000	65,000	130,000	130,000
Shares of common stock reserved for stock based benefits	1,035,307		1,035,307
Vesting period, years			4 years
Number of shares available for future issuance	464,953		464,953
Weighted average remaining contractual term, years			3 years 9 months 22 days
Aggregate intrinsic value for all options outstanding	104,182		104,182
Weighted average remaining contractual term for exercisable options, years			2 years 9 months 4 days
Aggregate intrinsic value of exercisable options	104,182		104,182
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	12,000	15,000	24,000	29,000
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%
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	24,000	27,000	49,000	53,000
Vesting period, years			4 years
Aggregate intrinsic value for all options outstanding	225,000		225,000
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	$ 30,000	$ 41,000	$ 30,000	$ 41,000
Shares of common stock reserved for stock based benefits	30,000		30,000
Number of shares available for future issuance	6,000		6,000
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