CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
May 31, 2014
May 31, 2013
May 31, 2014
May 31, 2013
Income Statement [Abstract]        
Sales $ 119,429 $ 121,719 $ 334,786 $ 349,823
Cost of sales 104,561 108,528 297,041 312,373
Gross margin 14,868 13,191 37,745 37,450
Operating expenses 8,668 7,326 24,319 22,269
Research and development expenses 1,275 1,590 3,950 4,356
Income from operations 4,925 4,275 9,476 10,825
Interest expense (935) (998) (2,564) (3,062)
Other non-operating income, net 1,014 146 1,028 68
Income before income taxes 5,004 3,423 7,940 7,831
Income tax expense 1,933 1,365 3,142 2,875
Net income $ 3,071 $ 2,058 $ 4,798 $ 4,956
Weighted-average common shares and equivalents outstanding:        
Basic 12,532 12,395 12,502 12,349
Diluted 12,875 12,670 12,847 12,548
Earnings per common share:        
Basic earnings per share $ 0.24 $ 0.17 $ 0.38 $ 0.40
Diluted earnings per share $ 0.24 $ 0.16 $ 0.37 $ 0.39