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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - shares
Apr. 01, 2017
Dec. 31, 2016
Mar. 26, 2016
SHAREHOLDERS' EQUITY:      
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000 1,000,000
Preferred stock, shares issued (in shares) 0 0 0
Preferred stock, shares outstanding (in shares) 0 0 0
Common stock, shares authorized (in shares) 80,000,000 80,000,000 80,000,000
Common stock, shares issued (in shares) 20,518,049 20,342,069 20,301,084
Common stock, shares outstanding (in shares) 20,518,049 20,342,069 20,301,084