CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS
Net revenues	$ 482,746	$ 579,561	$ 542,896
Cost of sales	409,120	458,721	449,116
Gross profit	73,626	120,840	93,780
Selling, general and administrative expense	38,165	40,661	41,215
Research and technical expense	3,505	3,285	3,259
Operating income	31,956	76,894	49,306
Interest income	(114)	(188)	(248)
Interest expense	72	87	156
Income before income taxes	31,998	76,995	49,398
Provision for income taxes	10,421	26,813	18,270
Net income	$ 21,577	$ 50,182	$ 31,128
Net income per share:
Basic (in dollars per share)	$ 1.75	$ 4.09	$ 2.55
Diluted (in dollars per share)	$ 1.74	$ 4.07	$ 2.54
Dividends declared per common share (in dollars per share)	$ 0.88	$ 0.88	$ 0.80