Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 31, 2015	Jan. 31, 2015
Condensed Consolidated Balance Sheets
Property and equipment, accumulated depreciation (in dollars)	$ 194,998	$ 181,475
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Authorized shares	32,000,000	32,000,000
Common stock, shares issued	15,714,797	15,743,617
Common stock, shares outstanding	15,248,764	15,577,867
Treasury stock, shares	466,033	165,750