Related Party Transactions (Details)		3 Months Ended		9 Months Ended
	Feb. 25, 2009 board_members shares	Oct. 29, 2016 USD ($) shares	Oct. 31, 2015 USD ($)	Oct. 29, 2016 USD ($) board_members shares	Oct. 31, 2015 USD ($)	Apr. 29, 2016 $ / shares shares	Jan. 30, 2016 shares	Jul. 10, 2015
Related Party Transaction [Line Items]
Common stock, shares owned by related party | shares		63,503,159		63,503,159			57,170,245
Related party, ownership interest in Company, percentage								4.99%
Number of board members appointed by affiliates who hold beneficial ownership, Upper limit | board_members	3
Minimum beneficial ownership percentage of partners, Upper limit	50.00%
Beneficial ownership to equal at least 50% as of February 25, 2009, Shares | shares	8,700,000
Number of board members appointed by affiliates who hold beneficial ownership, Lower limit | board_members	2
Minimum beneficial ownership percentage of partners, Lower limit	10.00%
Number of board of directors designated by GE Equity or NBCU serving on board | board_members				0
GE [Member]
Related Party Transaction [Line Items]
Common stock, shares owned by related party | shares						3,545,049
Sale of stock, price per share | $ / shares						$ 2.15
NBCU [Member]
Related Party Transaction [Line Items]
Common stock, shares owned by related party | shares		7,141,849		7,141,849
Related party, ownership interest in Company, percentage		11.20%		11.20%
Related party cash payment for right to use a specified channel in the Boston market area | $		$ 500,000
Number of board members appointed by affiliates who hold beneficial ownership, Upper limit | board_members				1
Minimum beneficial ownership to retain board seat, percentage				5.00%
Affiliate ownership percentage threshold to sell outstanding shares, Lower threshold				5.00%
Affiliate ownership percentage threshold to sell outstanding shares, Upper threshold				90.00%
Maximum aggregate transfer of beneficial ownership to individual, percentage				20.00%
Newgistics, Inc. [Member]
Related Party Transaction [Line Items]
Purchases from related party | $		1,255,000	$ 1,152,000	$ 3,789,000	$ 3,563,000
On Air Food Supplier [Member]
Related Party Transaction [Line Items]
Purchases from related party | $		$ 412,000	$ 2,129,000	$ 1,635,000	$ 2,892,000