Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	Apr. 01, 2012	Jan. 01, 2012
Consolidated Balance Sheets [Abstract]
Accumulated amortization on intangible assets	$ 1.3	$ 11.7
Discount on current portion of contract acquisition costs payable	0.9	0.9
Discount on long-term contract acquisition costs payable	$ 1.2	$ 1.4
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	26,441	26,406
Common stock, shares outstanding	26,441	26,406