Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares					3 Months Ended	12 Months Ended
	Dec. 26, 2019	Sep. 25, 2019	Jun. 24, 2019	Mar. 22, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Payments of cash dividends (in dollars per share)	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.76	$ 0.72	$ 0.40