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Earnings (Loss) Per Share - Calculation of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
BASIC
Net income (loss)	$ (1,005)	$ (587)
Weighted-average common shares outstanding (in shares)	13,827	14,087
Basic earnings (loss) per share (in dollars per share)	$ (0.07)	$ (0.04)
DILUTED
Net income (loss)	$ (1,005)	$ (587)
Weighted-average common shares outstanding (in shares)	13,827	14,087
Dilutive effect of stock options, restricted stock and common stock warrants (in shares)	0	0
Weighted-average common shares outstanding on a diluted basis (in shares)	13,827	14,087
Diluted earnings (loss) per share (in dollars per share)	$ (0.07)	$ (0.04)

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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