Share-based Compensation (Details) (USD $) | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | | 6 Months Ended |
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Mar. 31, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Mar. 31, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2014 |
Stock Options [Member] | Stock Options [Member] | Stock Options [Member] | Stock Options [Member] | Stock Options [Member] | Restricted Stock [Member] | Restricted Stock [Member] | Restricted Stock [Member] | Restricted Stock [Member] | Restricted Stock [Member] | 2006 Amended Stock and Incentive Plan [Member] | 2006 Amended Stock and Incentive Plan [Member] | 2006 Amended Stock and Incentive Plan [Member] | 2006 Amended Stock and Incentive Plan [Member] |
| | | Executive Employees and Directors [Member] | Non-Executive Employees [Member] | | | | Minimum [Member] | Maximum [Member] | Plan | Stock Options [Member] | Stock Options [Member] | Stock Options [Member] |
| | | | | | | | | | | | Minimum [Member] | Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of active plans for share-based compensation grants | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 1 | ' | ' | ' |
Number of shares reserved for share-based grants (in shares) | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 3,450,000 | ' | ' | ' |
Shares available for grant (in shares) | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 360,531 | ' | ' | ' |
Term of share-based payment award | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | '3 years | '4 years | ' | ' | '5 years | '7 years |
Vesting period | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | '3 years | ' | ' |
Share-based compensation expense | $661,000 | $921,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Weighted-average assumptions used to value the options granted [Abstract] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Expected life in years | ' | ' | '2 years 9 months 22 days | '4 years 6 months 4 days | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Risk free interest rate (in hundredths) | ' | ' | 1.00% | 1.35% | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Expected volatility (in hundredths) | ' | ' | 66.41% | 89.43% | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Expected dividend yield (in hundredths) | ' | ' | 0.00% | 0.00% | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Weighted-average grant date fair value (in dollars per share) | ' | ' | $1.21 | $1.65 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Forfeiture rate (in hundredths) | ' | ' | ' | ' | ' | 0.00% | 18.00% | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Stock options, number of shares [Roll Forward] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Outstanding, beginning of period (in shares) | ' | ' | 2,328,043 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Options granted (in shares) | ' | ' | 131,300 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Options exercised (in shares) | ' | ' | -85,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Options surrendered (in shares) | ' | ' | -163,018 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Outstanding, end of period (in shares) | ' | ' | 2,211,325 | ' | 2,328,043 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Exercisable, end of period (in shares) | ' | ' | 1,402,997 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Stock options, weighted average exercise price [Roll Forward] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Outstanding, beginning of period (in dollars per share) | ' | ' | $3.39 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Options granted (in dollars per share) | ' | ' | $2.98 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Options exercised (in dollars per share) | ' | ' | $0.80 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Options surrendered (in dollars per share) | ' | ' | $5.02 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Outstanding, end of period (in dollars per share) | ' | ' | $3.34 | ' | $3.39 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Exercisable, end of period (in dollars per share) | ' | ' | $3.74 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Stock options, additional disclosures [Abstract] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Outstanding, weighted average remaining life in years | ' | ' | '3 years 9 months | ' | '3 years 10 months 6 days | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Exercisable, Weighted average remaining life in years | ' | ' | '2 years 6 months | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Outstanding, aggregate intrinsic value, end of period | ' | ' | 117,780 | ' | 1,781,415 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Exercisable, aggregate intrinsic value, end of period | ' | ' | 39,994 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Fair value of stock options vested | ' | ' | 620,000 | 315,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Restricted shares, number of shares [Roll Forward] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Balance, beginning of period (in shares) | ' | ' | ' | ' | ' | ' | ' | ' | 146,262 | ' | ' | ' | ' | ' | ' | ' |
Shares granted (in shares) | ' | ' | ' | ' | ' | ' | ' | ' | 405,625 | ' | ' | ' | ' | ' | ' | ' |
Shares vested (in shares) | ' | ' | ' | ' | ' | ' | ' | ' | -50,436 | ' | ' | ' | ' | ' | ' | ' |
Shares forfeited (in shares) | ' | ' | ' | ' | ' | ' | ' | ' | -9,212 | ' | ' | ' | ' | ' | ' | ' |
Balance, end of period (in shares) | ' | ' | ' | ' | ' | ' | ' | 492,239 | 492,239 | 146,262 | ' | ' | ' | ' | ' | ' |
Restricted shares, weighted average grant date fair value [Roll Forward] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Balance, beginning of period (in dollars per share) | ' | ' | ' | ' | ' | ' | ' | ' | $3.38 | ' | ' | ' | ' | ' | ' | ' |
Shares granted (in dollars per share) | ' | ' | ' | ' | ' | ' | ' | ' | $3.25 | ' | ' | ' | ' | ' | ' | ' |
Shares vested (in dollars per share) | ' | ' | ' | ' | ' | ' | ' | ' | $3.57 | ' | ' | ' | ' | ' | ' | ' |
Shares forfeited (in dollars per share) | ' | ' | ' | ' | ' | ' | ' | ' | $3.94 | ' | ' | ' | ' | ' | ' | ' |
Balance, end of period (in dollars per share) | ' | ' | ' | ' | ' | ' | ' | $3.24 | $3.24 | $3.38 | ' | ' | ' | ' | ' | ' |
Restricted shares, additional disclosures [Abstract] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Weighted average remaining life in years | ' | ' | ' | ' | ' | ' | ' | ' | '2 years 2 months 12 days | '2 years 2 months 23 days | ' | ' | ' | ' | ' | ' |
Outstanding, Aggregate intrinsic value | ' | ' | ' | ' | ' | ' | ' | 1,230,598 | 1,230,598 | 540,000 | ' | ' | ' | ' | ' | ' |
Unrecognized share-based compensation expense | ' | ' | $1,161,000 | ' | ' | ' | ' | $1,353,000 | $1,353,000 | ' | ' | ' | ' | ' | ' | ' |
Unrecognized compensation expense, weighted average period of recognition | ' | ' | '1 year 10 months 24 days | ' | ' | ' | ' | '2 years 2 months 12 days | ' | ' | ' | ' | ' | ' | ' | ' |