Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 07, 2018	Dec. 31, 2017
Condensed Consolidated Balance Sheets
Accounts receivable, allowances (in dollars)	$ 177	$ 177
Capitalized software, accumulated amortization (in dollars)	$ 19,570	$ 17,325
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, authorized shares	10,000,000	10,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized shares	340,000,000	340,000,000
Common stock, issued shares	75,987,863	74,120,113
Common stock, outstanding shares	75,987,863	74,120,113