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Earnings Per Share - Summary of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Basic weighted average number of shares outstanding		12,579,130	12,895,729
Net dilutive effect of share-based awards, treasury method	[1]	720,113	560,504
Diluted weighted average number of shares outstanding		13,299,243	13,456,233
Net Income (Loss) Attributable to Parent		$ 38,658	$ 7,818
Diluted		$ 3.07	$ 0.61
Net loss per share (in dollars per share)		$ 2.91	$ 0.58
[1] 10,770 shares of Class A Stock granted under share-based compensation arrangements.

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