Earnings Per Share - Summary of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Basic weighted average number of shares outstanding		12,553,802	12,825,944	12,696,143	12,940,129
Net dilutive effect of share-based awards, treasury method	[1]	592,784	1,007,050	498,291	906,010
Diluted weighted average number of shares outstanding		13,146,586	13,832,994	13,194,434	13,846,139
Net Income (Loss) Attributable to Parent		$ 15,639	$ 3,949	$ 41,106	$ 27,518
Diluted		$ 1.25	$ 0.31	$ 3.24	$ 2.13
Net loss per share (in dollars per share)		$ 1.19	$ 0.29	$ 3.12	$ 1.99

[1] For both the three and nine months ended September 30, 2020, the diluted earnings 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 both the three and nine months ended September 30, 2019).