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Shareholders' Equity (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Restricted stock and restricted stock units granted (in shares)	(343,667)	(203,424)
Employee Stock Option [Member]
Balance at the beginning of the period (in shares)	297,000	501,622
Shares reserved (in shares)	900,000	0
Options granted for modification (in shares)		(61,814)
Stock awards granted (in shares)		(72,115)
Restricted stock and restricted stock units granted (in shares)		(203,424)
Stock options granted (in shares)		0
Stock options exercised (in shares)	0	0
Balance at the end of the period (in shares)	824,932	297,000
Balance at the beginning of the period (in shares)	366,346	419,162
Options granted for modification (in shares)		150,474
Stock options granted (in shares)		0
Stock options exercised (in shares)	(2,276)	0
Balance at the end of the period (in shares)	372,927	366,346
Balance at the beginning of the period (in dollars per share)	$ 2.41	$ 3.18
Stock options exercised (in dollars per share)	1.18
Balance at the end of the period (in dollars per share)	$ 2.36	$ 2.41
Aggregate Intrinsic Value, Stock options exercised (in dollars)	$ 705
Employee Stock Option [Member] | Stock Option Plan 2013 [Member]
Cancelled or forfeited (in shares)	51,230	103,349
Cancelled or forfeited (in shares)	(51,230)	(103,349)
Cancelled (in dollars per share)	$ 2.17	$ 2.20
Employee Stock Option [Member] | Stock Option Plan 2018 [Member]
Stock options granted (in shares)	(119,515)
Stock options granted (in shares)	119,515
Stock options granted (in dollars per share)	$ 1.95
Employee Stock Option [Member] | Incentive Stock Option Plan 2003 [Member]
Cancelled or forfeited (in shares)	0	0
Cancelled or forfeited (in shares)	(59,428)	(99,941)
Cancelled (in dollars per share)	$ 2.09	$ 2.20
Restricted Stock and Restricted Stock Units [Member] | Stock Option Plan 2013 [Member]
Restricted stock and restricted stock units granted (in shares)	(178,000)
Cancelled or forfeited (in shares)	39,884	29,382
Cancelled or forfeited (in shares)	0	0
Cancelled (in dollars per share)	$ 1.22	$ 2.01
Restricted Stock and Restricted Stock Units [Member] | Stock Option Plan 2018 [Member]
Restricted stock and restricted stock units granted (in shares)	(165,667)

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Weighted average price of options that were either forfeited or expired.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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