Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 02, 2016	Jan. 02, 2016
Current assets:
Accounts receivable, net of allowance for doubtful accounts	$ 1,115	$ 1,039
Shareholders’ equity:
Undesignated preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Undesignated preferred stock, shares issued (in shares)	0	0
Undesignated preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	142,500,000	142,500,000
Common stock, shares issued (in shares)	46,686,000	49,402,000
Common stock, shares outstanding (in shares)	46,686,000	49,402,000