CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities
Net income (loss)	$ (2,734)us-gaap_ProfitLoss	$ 3,496us-gaap_ProfitLoss
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	6,403us-gaap_DepreciationAndAmortization	5,729us-gaap_DepreciationAndAmortization
Impairment of intangible assets	0us-gaap_AssetImpairmentCharges	398us-gaap_AssetImpairmentCharges
Stock-based compensation	3,483us-gaap_ShareBasedCompensation	2,754us-gaap_ShareBasedCompensation
Amortization of premium on marketable securities	336	285
Undistributed losses (earnings) of equity method investments	532	(749)
Deferred income tax provision (benefit)	(4,107)us-gaap_DeferredIncomeTaxExpenseBenefit	1,164us-gaap_DeferredIncomeTaxExpenseBenefit
Loss on disposal of long-lived assets	2us-gaap_GainLossOnDispositionOfAssets	4us-gaap_GainLossOnDispositionOfAssets
Changes in operating assets and liabilities, net of acquisitions and disposals:
Accounts receivable	4,973	1,901
Inventories	(236)us-gaap_IncreaseDecreaseInInventories	942us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets	1,754	665
Accounts payable	2,117	(4,521)
Deferred revenue	705	(3,250)
Accrued warranty and retrofit costs	(290)	(528)
Accrued compensation and benefits	(9,333)	1,154
Accrued restructuring costs	519	51
Accrued expenses and other current liabilities	(1,089)	(1,022)
Net cash provided by operating activities	3,035	8,473
Cash flows from investing activities
Purchases of property, plant and equipment	(1,576)	(1,015)
Sale/maturity of marketable securities	(22,269)	(26,082)
Sale/maturity of marketable securities	32,201	18,595
Acquisition, net of cash acquired	(15,428)	0
Other investment	(2,500)	0
Decrease in restricted cash	0	177
Net cash used in investing activities	(9,572)	(8,325)
Cash flows from financing activities
Principal repayment of capital lease obligation	(121)	0
Common stock dividend paid	(6,731)us-gaap_PaymentsOfDividendsCommonStock	(5,391)us-gaap_PaymentsOfDividendsCommonStock
Net cash used in financing activities	(6,852)	(5,391)
Effects of exchange rate changes on cash and cash equivalents	(2,966)	287
Net decrease in cash and cash equivalents	(16,355)	(4,956)
Cash and cash equivalents, beginning of period	94,114
Cash and cash equivalents, end of period	$ 77,759

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 55

-Paragraph 4K

-URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686

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-Section 45

-Paragraph 19

-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683

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-Publisher FASB

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-Topic 810

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (a),(c)

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-Section 55

-Paragraph 4J

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- Definition

The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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