Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Feb. 28, 2018	Nov. 30, 2017
Assets
Allowance for accounts receivable (in dollars)	$ 785	$ 676
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	46,297,792	47,281,035
Common stock, shares outstanding	46,297,792	47,281,035