Earning Per Common Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Numerator for basic and diluted earnings (loss) per common share:
Net income (loss)	$ 3,690	$ (1,858)
Denominator:
Weighted average shares outstanding (shares)	10,384	10,351
Denominator for basic earnings per common share (shares)	10,384	10,351
Effect of dilutive securities:
Other stock compensation plans (shares)	63	0
Dilutive potential common shares (shares)	63	0
Denominator for diluted earnings (loss) per common share - adjusted weighted average shares outstanding (shares)	10,447	10,351
Basic earnings (loss) per common share (usd per share)	$ 0.36	$ (0.18)
Diluted earnings (loss) per common share (usd per share)	$ 0.35	$ (0.18)
Anti-dilutive shares (shares)		212

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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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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