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Subsequent Events (Narrative) (Details) $ / shares in Units, $ in Thousands			9 Months Ended
	Oct. 28, 2019	Sep. 05, 2019 $ / shares	Sep. 30, 2019 USD ($) $ / shares	Dec. 31, 2018 $ / shares
Subsequent Event [Line Items]
Proceeds from issuance of common stock, net of issuance costs \| $			$ 4,049
Dividend declared, date		Sep. 05, 2019
Preferred stock dividend declared, amount per share		$ 0.15
Dividends payable, date to be paid		Nov. 01, 2019
Dividend, record date		Oct. 14, 2019
Common stock, par value (in dollars per share)			$ 0.001	$ 0.001
Compliance with Nasdaq Listing Rule 5550(a)(2), description			On January 8, 2019, the Company received a written notification from the Nasdaq Stock Market LLC ("Nasdaq") indicating that the Company was not in compliance with Nasdaq Listing Rule 5550(a)(2) because the minimum bid price of the Company's shares of common stock was below $1.00 per share for the previous 30 consecutive business days. The Company was provided an initial period of 180 calendar days, or until July 7, 2019, to regain compliance with the minimum bid price rule. The Company did not regain compliance with the minimum closing bid price requirement by July 7, 2019. The Company was previously notified by Nasdaq that it might be afforded a second 180 calendar days period to regain compliance with the minimum closing bid price requirement under certain circumstances if the Company notified Nasdaq of its intent to cure the deficiency. As a result, the Company applied for an extension of the cure period, as permitted under the notification, and received an extension until January 6, 2020 to regain compliance with the minimum bid price rule.
Subsequent Event [Member]
Subsequent Event [Line Items]
Stockholders' equity, reverse stock split	Certificate of Incorporation to effect a reverse stock split of the common stock, par value $0.001 per share (the "common stock") at a ratio of not less than 1-for-5 and not greater than 1-for-20
Minimum [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Stockholders' equity, reverse stock split conversion ratio	5
Maximum [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Stockholders' equity, reverse stock split conversion ratio	20