Stockholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Stock options to purchase shares of common stock
Restricted stock units vested and settled	4,000
Common stock issued, withholding taxes	3,000
Stock-based compensation	$ 59	$ 117
Restricted Stock Units [Member]
Number of shares granted	47,000	53,000
Weighted average grant-date fair value per share price	$ 3.72	$ 6.04
Restricted Stock Units [Member] \| Six Month Anniversary [Member]
Number of restricted stock vesting, percentage		16.67%
Number of shares granted, description		During the three months ended March 31, 2019, the Company granted approximately 47,000 restricted stock units with a weighted average grant date fair value of $3.72 per restricted stock unit. During the three months ended March 31, 2018, the Company granted approximately 53,000 restricted stock units with a weighted average grant date fair value of $6.04 per restricted stock unit. All restricted stock units granted vest as to 16.67% of the total underlying shares on the six month anniversary of the grant date and as to the balance of the total underlying shares in 30 substantially equal monthly installments, beginning on the seven month anniversary of the grant date, subject to accelerated vesting in the event of a change in control.
Amended 2010 Performance Incentive Plan [Member]
Number of option available for grants	1,000
Share-based awards, expiration date	Feb. 29, 2020
Amended 2010 Performance Incentive Plan [Member] \| Maximum [Member]
Number of option available for grants	240,000
2014 Inducement Plan [Member] \| Maximum [Member] \| New Employee [Member]
Number of option available for grants	85,000

Stock options to purchase shares of common stock.

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Amount of noncash expense for share-based payment arrangement.

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Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

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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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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Date the equity-based award expires, in CCYY-MM-DD format.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Percentage of vesting of award under share-based payment arrangement.

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Weighted average grant-date fair value of options vested.

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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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