Balance Sheets (Parenthetical) (USD $)	Mar. 30, 2013	Dec. 31, 2012
Balance Sheets
Undesignated stock, par value (in dollars per share)	$ 0.01	$ 0.01
Undesignated stock, shares authorized	10,000,000	10,000,000
Undesignated stock, shares issued	0	0
Undesignated stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	26,919,079	26,346,079
Common stock, shares outstanding	26,919,079	26,346,079