Stock-Based Compensation (Narrative) (Details) - USD ($) | 6 Months Ended |
Mar. 31, 2016 | Mar. 31, 2015 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock based compensation expense | $ 355,000 | $ 153,000 |
Proceeds from stock option exercises | $ 15,000 | $ 45,000 |
Non Statutory Stock Options [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, shares | 22,686 | 80,871 |
Stock options granted, exercise price | | $ 7.79 |
Stock options granted, per-share weighted average fair value | | $ 5.85 |
Non Statutory Stock Options [Member] | Minimum [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, exercise price | $ 5.29 | |
Stock options granted, per-share weighted average fair value | 2.87 | |
Non Statutory Stock Options [Member] | Maximum [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, exercise price | 6.23 | |
Stock options granted, per-share weighted average fair value | $ 4.52 | |
Incentive Stock Option [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, shares | 54,110 | 103,955 |
Stock options granted, exercise price | | $ 7.79 |
Stock options granted, per-share weighted average fair value | | $ 5.85 |
Incentive Stock Option [Member] | Minimum [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, exercise price | $ 5.29 | |
Stock options granted, per-share weighted average fair value | 2.87 | |
Incentive Stock Option [Member] | Maximum [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, exercise price | 6.23 | |
Stock options granted, per-share weighted average fair value | $ 4.52 | |
Employee Stock Option [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Stock options granted, shares | 76,796 | |
Stock options granted, exercise price | $ 5.31 | |
Aggregate Intrinsic Value, Outstanding | $ 497,000 | |
Aggregate Intrinsic Value, Exercisable | 363,000 | |
Remaining total unrecognized compensation cost related to unvested stock-based arrangements | $ 957,000 | |
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition | 4 years 7 months 6 days | |
Stock options exercised, shares | 6,864 | 3,891 |
Proceeds from stock option exercises | $ 15,000 | $ 7,000 |
Restricted Stock [Member] | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | |
Restricted stock granted, shares | 44,755 | |
Restricted stock granted, weighted average grant date fair value per share | $ 4.18 | |
Vesting period | 3 years | |
Remaining total unrecognized compensation cost related to unvested stock-based arrangements | $ 431,000 | |
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition | 2 years 7 months 6 days | |