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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		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted average basic shares outstanding (in shares)	14,922	13,539	13,798	13,526
Potentially dilutive common shares related to:
Stock options (in shares)	51	53	62	71
Unvested restricted stock awards (in shares)	20	18	21	20
Weighted average diluted shares outstanding (in shares)	14,993	13,610	13,881	13,617
Net income	$ 5,282	$ 7,491	$ 23,514	$ 22,125
Basic EPS (in dollars per share)	$ 0.35	$ 0.55	$ 1.70	$ 1.64
Diluted EPS (in dollars per share)	$ 0.35	$ 0.55	$ 1.69	$ 1.62
Weighted average anti-dilutive shares not included in the calculation of diluted EPS (in shares)	97	202	91	152

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