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Earnings (Loss) Per Share - Computation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income (loss)	$ (820)	$ 955	$ (1,288)	$ 2,323
Basic weighted average shares outstanding	8,638,091	9,112,613	8,702,743	9,154,658
Dilutive common stock equivalents using treasury stock method		249,424		357,991
Diluted weighted average shares outstanding	8,638,091	9,362,037	8,702,743	9,512,559
Basic earnings (loss) per common share	$ (0.09)	$ 0.10	$ (0.15)	$ 0.25
Diluted earnings (loss) per common share	$ (0.09)	$ 0.10	$ (0.15)	$ 0.24
Weighted average options outstanding	869,838	869,471	858,845	935,021
Anti-dilutive options not included in the computations	869,838	277,195	858,845	277,195

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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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