Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended			3 Months Ended				0 Months Ended	3 Months Ended	0 Months Ended			0 Months Ended	3 Months Ended
	Sep. 30, 2013 item	Jun. 28, 2013	Sep. 30, 2013 2012 Plan [Member]	Sep. 30, 2013 1991 Plan [Member]	Sep. 30, 2013 Non-Employee Directors [Member]	Dec. 31, 2012 Non-Employee Directors [Member] 1991 Plan [Member]	Sep. 30, 2013 Non-Vested Options [Member]	Aug. 14, 2013 Restricted Stock [Member]	Sep. 30, 2013 Restricted Stock [Member]	Aug. 14, 2013 Restricted Stock [Member] 2012 Plan [Member]	Aug. 14, 2013 Restricted Stock [Member] Non-Employee Directors [Member]	Dec. 31, 2012 Restricted Stock [Member] Non-Employee Directors [Member]	Aug. 14, 2013 Restricted Stock [Member] Non-Employee Directors [Member] 2012 Plan [Member]	Sep. 30, 2013 Restricted Non-Vested Options [Member]	Dec. 31, 2012 Restricted Non-Vested Options [Member] 1991 Plan [Member]	Dec. 31, 2012 Restricted Non-Vested Options [Member] Non-Employee Directors [Member] 1991 Plan [Member]	Sep. 30, 2013 Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved			1,751,940
Shares expired and forfeited				151,940
Shares available for future grants			1,338,466
Options expiration period, years	10 years				10 years
Vesting percentage after first year of service	25.00%
Share-based compensation, percentage of options vesting each month after year one	2.778%
Options granted	191,500					10,000
Number of years for termination after person ceases to be director of the Company					1 year
Number of non-employee directors	4
Closing stock price	$ 0.34	$ 0.17
Value of restricted stock											$ 22,500	$ 17,500
Restricted stock granted								177,500						177,500	106,064	26,516
Restricted stock to be granted										200,000	50,000		50,000
Performance shares to be granted to employees																	382,000
Shares issued and included in outstanding stock																	0
Total unrecognized compensation cost							$ 144,000		$ 72,000
Weighted-average period for recognition of compensation cost, in years							2 years 2 months 12 days		3 years 2 months 12 days