Defined Contribution Plan, Employer Matching Contribution

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for nonvested stock options, which may be expressed in a decimal value for number of years.

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No definition available.

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- Definition

Employee Stock Purchase Plan (ESPP), Annual Employee Contribution Limit Percentage

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- Definition

Employee Stock Purchase Plan (ESPP), Employee Purchase Price Percentage

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- Definition

Number of equity incentive compensation plans maintained by the Company.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Aggregate Intrinsic Value

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No definition available.

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Weighted average period over which unrecognized compensation is expected to be recognized for employee service share-based compensation, which may be expressed in a decimal value for number of years.

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No definition available.

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- Definition

The weighted average remaining contractual term for stock-based awards, which may be expressed in a decimal value for number of years.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Contractual Term

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Stock Options, Average Maximum Vesting Period

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Share-based Compensation Arrangement by Share-based Payment Award, Stock Options, Average Vesting Period, Minimum

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Over Target Percentage

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options.

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No definition available.

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Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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No definition available.

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- Definition

Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Equity (Narrative) (Details)		3 Months Ended		6 Months Ended
Equity (Narrative) (Details)	Dec. 28, 2017 USD ($) shares	Mar. 31, 2018 USD ($) plan shares	Mar. 31, 2017 USD ($) shares	Mar. 31, 2018 USD ($) plan $ / shares shares	Mar. 31, 2017 USD ($) $ / shares shares	Sep. 30, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive compensation plans maintained by the company \| plan		3		3
Intrinsic value of shares exercised				$ 13,000	$ 900,000
Award vesting rights				100.00%
Stock-based compensation expense		$ 933,000	$ 829,000	$ 1,848,000	1,592,000
Cash matching contribution		$ 100,000	$ 200,000	$ 300,000	$ 300,000
Weighted average antidilutive options, unvested restricted stock units and awards, warrants and ESPP shares excluded from the computation (in shares) \| shares		972,000	370,000	793,000	550,000
Granted (in shares) \| shares		0	0	0	0
Discontinued Operations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 0	$ (20,000)	$ 0	$ (11,000)
Employee stock purchase plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan (ESPP), employee purchase price percentage				85.00%
Employee stock purchase plan (ESPP), annual employee contribution limit percentage				10.00%
Annual contribution to ESPP, limitation				$ 25,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		361,000	371,000	$ 650,000	639,000
Employee stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, average minimum vesting period (in years)				4 years
Stock options, average maximum vesting period (in years)				5 years
Stock options, contractual life (in years)				10 years
Unrecognized compensation expense		100,000		$ 100,000
Unrecognized compensation expense, period for recognition (in years)				2 years 6 months 11 days
Stock-based compensation expense		10,000	11,000	$ 20,000	22,000
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unamortized stock-based compensation expense		$ 100,000		$ 100,000
Remaining unamortized stock-based compensation expense, period for recognition (in years)				2 years 6 months 19 days
Unvested restricted stock units (in shares) \| shares		8,154		8,154		8,154
Granted (in usd per share) \| $ / shares				$ 0.00
Granted (in shares) \| shares				0
Vested (in shares) \| shares				0
Restricted Stock Awards [Member] \| Minimum [Member] \| Equity incentive plans 2012 and 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				3 years
Restricted Stock Awards [Member] \| Maximum [Member] \| Equity incentive plans 2012 and 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				4 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unamortized stock-based compensation expense		$ 4,300,000		$ 4,300,000
Remaining unamortized stock-based compensation expense, period for recognition (in years)				2 years 10 months 13 days
Unvested restricted stock units (in shares) \| shares		747,507		747,507		778,084
Outstanding non-vested RSUs aggregate intrinsic value		$ 4,300,000		$ 4,300,000
Outstanding non-vested RSUs weighted average remaining contractual term (in years)				1 year 8 months 27 days
Intrinsic value of RSUs vested				$ 2,000,000	$ 2,800,000
Granted (in usd per share) \| $ / shares				$ 6.53	$ 8.04
Granted (in shares) \| shares				296,043
Vested (in shares) \| shares				(313,857)
Restricted Stock Units [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	40,000
Grant date fair value	$ 300,000
Restricted Stock Units [Member] \| Senior Vice President of Engineering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	14,000
Grant date fair value	$ 100,000
Restricted Stock Units [Member] \| Vice President of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	10,000
Grant date fair value	$ 100,000
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unamortized stock-based compensation expense, period for recognition (in years)				1 year 10 months 7 days
Unvested restricted stock units (in shares) \| shares		402,814		402,814		328,708
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested		$ 2,300,000		$ 2,300,000
Intrinsic value of RSUs vested		0	$ 0	$ 1,400,000	$ 0
Granted (in usd per share) \| $ / shares				$ 7.62	$ 8.34
Granted (in shares) \| shares	108,500			240,164
Grant date fair value	$ 900,000
Award vesting rights				200.00%
Unamortized stock based compensation		$ 2,200,000		$ 2,200,000
Weighted average remaining contractual term, PSU				1 year 10 months 7 days
Vested (in shares) \| shares				(166,058)
PSUs vested over target percentage \| shares				67,664
Performance Stock Units [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	40,000
Grant date fair value	$ 300,000
Performance Stock Units [Member] \| Senior Vice President of Engineering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	14,000
Grant date fair value	$ 100,000
Performance Stock Units [Member] \| Vice President of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares	10,000
Grant date fair value	$ 100,000
Performance Stock Units [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights	0.00%
Performance Stock Units [Member] \| Minimum [Member] \| Two Thousand Twelve Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				1 year
Performance Stock Units [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights	200.00%
Performance Stock Units [Member] \| Maximum [Member] \| Two Thousand Twelve Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				3 years
Performance Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unamortized stock-based compensation expense, period for recognition (in years)				1 year 6 months 19 days
Unvested restricted stock units (in shares) \| shares		33,333		33,333		33,333
Granted (in usd per share) \| $ / shares				$ 0.00
Granted (in shares) \| shares				0
Unamortized stock based compensation		$ 300,000		$ 300,000
Vested (in shares) \| shares				0
RSU Vesting - December 28, 2018 [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights				20.00%
RSU Vesting - December 28, 2019 [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights				20.00%
RSU Vesting - December 28, 2020 [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights				20.00%
RSU Vesting - December 28, 2021 [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights				20.00%