Earnings Per Share - Summary of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Basic weighted average number of shares outstanding		12,895,729	13,020,344
Net dilutive effect of share-based awards, treasury method	[1]	560,504	830,977
Diluted weighted average number of shares outstanding		13,456,233	13,851,321
Net Income (Loss) Attributable to Parent		$ 7,818	$ 11,194
Diluted		$ 0.61	$ 0.86
Net loss per share (in dollars per share)		$ 0.58	$ 0.81

[1] For the three months ended March 31, 2020, the diluted net income per share computation does not include the anti-dilutive effect of 10,770 shares of Class A Stock granted under share-based compensation arrangements (7,628 shares for the three months ended March 31, 2019).