Stock Options (Details 3)	12 Months Ended
Dec. 31, 2018 $ / shares shares
Number of Shares Subject to Outstanding Options \| shares	317,500
Weighted Average Contractual Life (years)	7 years 8 months 5 days
Weighted Average Exercise Price	$ 3.41
Number of Shares Subject To Options Exercise \| shares	307,500
Weighted Average Remaining Contractual Life (Years)	7 years 8 months 5 days
Weighted Average Exercise Price	$ 3.49
Exercise Price Range One [Member]
Range of Exercise Prices	$ 1.05
Number of Shares Subject to Outstanding Options \| shares	55,000
Weighted Average Contractual Life (years)	5 years 2 months 30 days
Weighted Average Exercise Price	$ 1.05
Number of Shares Subject To Options Exercise \| shares	45,000
Weighted Average Remaining Contractual Life (Years)	5 years 2 months 30 days
Weighted Average Exercise Price	$ 1.05
Exercise Price Range Two [Member]
Range of Exercise Prices	$ 1.25
Number of Shares Subject to Outstanding Options \| shares	7,500
Weighted Average Contractual Life (years)	6 years 5 months 16 days
Weighted Average Exercise Price	$ 1.25
Number of Shares Subject To Options Exercise \| shares	7,500
Weighted Average Remaining Contractual Life (Years)	6 years 5 months 16 days
Weighted Average Exercise Price	$ 1.25
Exercise Price Range Three [Member]
Range of Exercise Prices	$ 1.34
Number of Shares Subject to Outstanding Options \| shares	7,500
Weighted Average Contractual Life (years)	6 years 6 months
Weighted Average Exercise Price	$ 1.34
Number of Shares Subject To Options Exercise \| shares	7,500
Weighted Average Remaining Contractual Life (Years)	6 years 6 months
Weighted Average Exercise Price	$ 1.34
Exercise Price Range Four [Member]
Range of Exercise Prices	$ 1.70
Number of Shares Subject to Outstanding Options \| shares	7,500
Weighted Average Contractual Life (years)	6 years 9 months 14 days
Weighted Average Exercise Price	$ 1.70
Number of Shares Subject To Options Exercise \| shares	7,500
Weighted Average Remaining Contractual Life (Years)	6 years 9 months 14 days
Weighted Average Exercise Price	$ 1.70
Exercise Price Range Five [Member]
Range of Exercise Prices	$ 2.28
Number of Shares Subject to Outstanding Options \| shares	7,500
Weighted Average Contractual Life (years)	7 years 6 months 18 days
Weighted Average Exercise Price	$ 2.28
Number of Shares Subject To Options Exercise \| shares	7,500
Weighted Average Remaining Contractual Life (Years)	7 years 6 months 18 days
Weighted Average Exercise Price	$ 2.28
Exercise Price Range Six [Member]
Range of Exercise Prices	$ 4.20
Number of Shares Subject to Outstanding Options \| shares	232,500
Weighted Average Contractual Life (years)	8 years 4 months 9 days
Weighted Average Exercise Price	$ 4.20
Number of Shares Subject To Options Exercise \| shares	232,500
Weighted Average Remaining Contractual Life (Years)	8 years 4 months 9 days
Weighted Average Exercise Price	$ 4.20

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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