CONSOLIDATED STATEMENTS OF DEFICIT (Parenthetical) - $ / shares	12 Months Ended
Jan. 01, 2015	Dec. 31, 2015	Dec. 26, 2013
Statement of Stockholders' Equity [Abstract]
Extraordinary cash dividends declared (in dollars per share)	$ 1
Cash dividends declared (in dollars per share)	$ 0.88	$ 0.88	$ 0.84

Aggregate cash dividends declared during the period for each share of common stock outstanding.

No definition available.

Name:	rgc_CommonStockDividendsPerShareCashDeclared
Namespace Prefix:	rgc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant