CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Sales	$ 77,751	$ 43,281
Cost of sales	37,187	22,623
Gross profit	40,564	20,658
Operating expenses:
Selling, general and administrative	5,363	4,735
Research and development	3,365	2,889
Bad debt expense	269	436
Total operating expenses	8,997	8,060
Loss on disposal of equipment	(19)
Income from operations	31,548	12,598
Other income (expense):
Interest expense	(85)
Interest income	229	267
Foreign exchange gains	46	122
Other, net	(16)	(55)
Total other income, net	174	334
Income before income taxes	31,722	12,932
Income tax expense	9,709	4,247
Net income	$ 22,013	$ 8,685
Basic earnings per share	$ 1.72	$ 0.68
Diluted earnings per share	$ 1.70	$ 0.68
Weighted average shares outstanding-Basic	12,827,918	12,704,538
Weighted average shares outstanding-Diluted	12,926,814	12,835,096