Equity (Narrative) (Details)				3 Months Ended		9 Months Ended
	Jun. 24, 2016 USD ($)	Jun. 20, 2016 shares	Dec. 10, 2014 USD ($) employee shares	Jun. 30, 2016 USD ($) plan shares	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) plan shares	Jun. 30, 2015 USD ($)	Jul. 05, 2016 $ / shares	Sep. 30, 2015 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						$ 82,000	$ 194,000
Unvested restricted stock units (in shares) | shares				668,331		668,331
Stock-based compensation expense				$ 727,000	$ 401,000	$ 1,703,000	3,209,000
Cash matching contribution				100,000		$ 300,000
Discontinued Operations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense							900,000
Employee stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, average minimum vesting period						4 years
Stock options, average maximum vesting period						5 years
Stock options, contractual life						10 years
Unrecognized compensation expense				200,000		$ 200,000
Unrecognized compensation expense, period for recognition						4 years
Number of shares affected (in shares) | shares			56,000
Incremental expense (benefit) with modification			$ (200,000)
Stock-based compensation expense				9,000	0	$ 25,000	184,000
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period						3 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares affected (in shares) | shares			147,000
Number of employees affected | employee			80
Incremental expense (benefit) with modification			$ 49,000
Remaining unamortized stock-based compensation expense				$ 2,900,000		$ 2,900,000
Remaining unamortized stock-based compensation expense, period for recognition						2 years 7 months 6 days
Unvested restricted stock units (in shares) | shares				668,331		668,331			570,231
Outstanding non-vested RSUs aggregate intrinsic value				$ 4,000,000		$ 4,000,000
Outstanding non-vested RSUs weighted average remaining contractual term						1 year 8 months 12 days
Share-based compensation arrangement by share-based payment award, equity instruments other than options, aggregate intrinsic value, vested						$ 1,600,000	4,400,000
Share-based compensation arrangement, by share-based payment award, options, vested and expected to vest, exercisable, number | shares				600,000		600,000
Share based compensation arrangement, by share based payment award, equity instruments other than options, expected to vest, intrinsic value				$ 3,700,000		$ 3,700,000
Share based compensation arrangement, by share based payment award, equity investments other than options, expected to vest, weighted average contractual term						1 year 8 months 12 days
Vested (in shares) | shares			300,000			283,553
Granted (in shares) | shares						431,150
Employee stock purchase plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				57,000	36,000	$ 168,000	100,000
401(k) match in common stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 0	$ 60,000	$ 0	$ 284,000
2012 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental shares authorized (in shares) | shares						500,000
Shares authorized (in shares) | shares				2,500,000		2,500,000
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%
Share-based compensation arrangement by share-based payment award accelerated compensation cost						$ 25,000
Non-employee Directors [Member] | 2012 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum grant date fair value limit						250,000
Non-employee Directors serving as Chairman or Lead Independent Director [Member] | 2012 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum grant date fair value limit						$ 350,000
Chief Financial Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 300,000
Chief Financial Officer [Member] | Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares		150,000
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends payable (in usd per share) | $ / shares								$ 1.50