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Basis of Presentation - Reconciliation of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted average basic shares outstanding (in shares)	13,092	13,514	13,227	13,519
Potentially dilutive common shares related to:
Stock options (in shares)	54	54	67	80
Unvested restricted stock awards (in shares)	18	17	22	22
Weighted average diluted shares outstanding (in shares)	13,164	13,585	13,316	13,621
Net income	$ 9,285	$ 7,406	$ 18,232	$ 14,634
Basic EPS (in dollars per share)	$ 0.71	$ 0.55	$ 1.38	$ 1.08
Diluted EPS (in dollars per share)	$ 0.71	$ 0.55	$ 1.37	$ 1.07
Weighted average anti-dilutive shares not included in the calculation of diluted EPS (in shares)	111	207	88	109

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