Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 31, 2017	Nov. 30, 2016
Assets
Allowance for accounts receivable (in dollars)	$ 1,051	$ 1,143
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
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	48,280,613	48,536,516
Common stock, shares outstanding	48,280,613	48,536,516