CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Total revenues	$ 21,166	$ 101,348
Cost of revenues:
Total cost of revenues	21,187	54,257
Gross profit (loss)	(21)	47,091
Operating expenses:
Selling, general and administrative	5,869	6,702
Research and development	3,301	4,375
Bad debt expense	697	347
Total operating expenses	9,867	11,424
Income (loss) from operations	(9,888)	35,667
Other income (expense):
Interest expense	(112)	(132)
Interest income	59	31
Foreign exchange gains (losses)	1,589	(21)
Other, net	(90)	(26)
Total other income (expense), net	1,446	(148)
Income (loss) before income taxes	(8,442)	35,519
Income tax expense (benefit)	(2,997)	11,343
Net income (loss)	(5,445)	24,176
Basic earnings (loss) per share	$ (0.41)	$ 1.86
Diluted earnings (loss) per share	$ (0.41)	$ 1.85
Weighted average shares outstanding - Basic	12,977,913	12,947,195
Weighted average shares outstanding - Diluted	12,977,913	13,000,113
Products
Revenues:
Total revenues	18,463	97,820
Cost of revenues:
Total cost of revenues	18,613	51,239
Rental equipment
Revenues:
Total revenues	2,703	3,528
Cost of revenues:
Total cost of revenues	$ 2,574	$ 3,018