Earnings Per Share - Basic Loss Per Share Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income from continuing operations
Income from continuing operations									$ 62,971	$ 141,169	$ 4,483
Equity earnings of non-consolidated entities									0	738	3,639
Net Income									62,971	141,907	8,122
Undeclared Series A Convertible Preferred Stock dividends									0	0	(10,462)
Net income (loss) attributable to common shareholders									$ 62,971	$ 141,907	$ (2,340)
Weighted average outstanding shares of common stock basic (shares)									100,618,105	104,530,572	97,460,676
Net income per share - basic (usd per share)	$ 0.08	$ 0.17	$ 0.22	$ 0.16	$ 0.37	$ 0.27	$ 0.33	$ 0.38	$ 0.63	$ 1.36	$ (0.02)