Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenue	$ 18,416us-gaap_Revenues	$ 14,663us-gaap_Revenues
Cost of revenue	13,237us-gaap_CostOfRevenue	12,272us-gaap_CostOfRevenue
Gross profit	5,179us-gaap_GrossProfit	2,391us-gaap_GrossProfit
Operating expense:
Selling, general, and administrative	8,627	5,656
Research and development	2,174us-gaap_ResearchAndDevelopmentExpense	1,824us-gaap_ResearchAndDevelopmentExpense
Gain from change in estimate on ARO obligation	845	0
Loss on sale of assets	228us-gaap_GainsLossesOnSalesOfAssets	0us-gaap_GainsLossesOnSalesOfAssets
Total operating expense	10,184us-gaap_OperatingExpenses	7,480us-gaap_OperatingExpenses
Operating loss	(5,005)us-gaap_OperatingIncomeLoss	(5,089)us-gaap_OperatingIncomeLoss
Other income (expense):
Interest expense, net	(130)us-gaap_InterestIncomeExpenseNet	(126)us-gaap_InterestIncomeExpenseNet
Foreign exchange gain	57	100
Gain on sale of investment	0us-gaap_GainLossOnInvestments	290us-gaap_GainLossOnInvestments
Change in fair value of financial instruments	36us-gaap_UnrealizedGainLossOnDerivatives	(78)us-gaap_UnrealizedGainLossOnDerivatives
Total other (expense) income	(37)us-gaap_NonoperatingIncomeExpense	186us-gaap_NonoperatingIncomeExpense
Loss from continuing operations before income tax expense	(5,042)	(4,903)
Income tax benefit	1,912us-gaap_IncomeTaxExpenseBenefit	1,080us-gaap_IncomeTaxExpenseBenefit
Loss from continuing operations	(3,130)	(3,823)
Income from discontinued operations, net of tax	59,258	1,769
Net income (loss)	56,128us-gaap_NetIncomeLoss	(2,054)us-gaap_NetIncomeLoss
Foreign exchange translation adjustment	(711)	45
Comprehensive income (loss)	$ 55,417us-gaap_ComprehensiveIncomeNetOfTax	$ (2,009)us-gaap_ComprehensiveIncomeNetOfTax
Net income (loss) per basic and diluted share:
Net income (loss) per basic and diluted shares, continuing operations (USD per share)	$ (0.10)	$ (0.13)
Net income (loss) per basic and diluted shares, discontinued operations (USD per share)	$ 1.90	$ 0.06
Net income (loss) per basic share and diluted share (USD per share)	$ 1.80us-gaap_EarningsPerShareBasicAndDiluted	$ (0.07)us-gaap_EarningsPerShareBasicAndDiluted
Weighted-average number of basic and diluted shares outstanding	31,217	29,938

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of gain (loss) on sale or disposal of assets utilized in financial service operations.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

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The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The net amount of operating interest income (expense).

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The net result for the period of deducting operating expenses from operating revenues.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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+ Details

Name:	us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration