Summary of Significant Accounting Policies (Details 5) - shares	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Accounting Policies [Abstract]
Denominator for basic net loss per share - weighted average shares	1,745,000	1,740,000	1,725,000	1,724,000	1,720,000	1,712,000	1,698,000	1,694,000	1,734,000	1,706,000
Effect of dilutive securities: stock options, restricted stock and restricted stock units									0	0
Denominator for diluted net loss per share - weighted average shares	1,745,000	1,740,000	1,725,000	1,724,000	1,720,000	1,712,000	1,698,000	1,694,000	1,734,000	1,706,000