Income Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income per share:
Basic weighted average shares outstanding (in shares)	30,007	29,684	30,099
Dilutive potential common shares (in shares)	2,116	0	256
Diluted weighted average shares outstanding (in shares)	32,123	29,684	30,355
Stock options
Income per share:
Antidilutive securities excluded from computation of earnings per share, weighted average, amount (in shares)	0	96	0
Anti-dilutive securities excluded from computation of diluted income per share (in shares)	14	76	10
RSUs
Income per share:
Antidilutive securities excluded from computation of earnings per share, weighted average, amount (in shares)	0	257	0
Anti-dilutive securities excluded from computation of diluted income per share (in shares)	11	228	1