Summary of Significant Accounting Policies (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounting Policies [Abstract]
Weighted average common shares outstanding for basic earnings (loss) per share	116,807	116,607
Dilutive effect of options and restricted stock units	1,862	77
Diluted weighted average common shares outstanding	118,669	116,684
Options
Disaggregation of Revenue [Line Items]
Antidilutive securities (in shares)	1,500	2,700