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Basic and Diluted Earnings Per Common 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
Earnings Per Share [Abstract]
Weighted average common shares outstanding   during the period – shares used for basic   earnings per common share	9,363	9,517	9,352	9,646
Common shares issuable under share-based payment plans which are potentially dilutive	36	28	38	35
Common shares used for diluted earnings per common share	9,399	9,545	9,390	9,681
Net income attributable to the Company	$ 352	$ 5,455	$ 28,807	$ 11,222
Earnings per common share:
-basic	$ 0.04	$ 0.57	$ 3.08	$ 1.16
-diluted	$ 0.04	$ 0.57	$ 3.07	$ 1.16

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
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-Section 45
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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
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