Stock Option Plans and 401(k) Plan (Details 3)	12 Months Ended
	Mar. 31, 2016 $ / shares shares
Number Outstanding | shares	336,987
Weighted Average Remaining Years until Expiration	6 years 6 months 11 days
Weighted Average Exercise Price | $ / shares	$ 9.56
Number Exercisable | shares	201,779
Exercisable Weighted Average Exercise Price | $ / shares	$ 10.11
Exercise Price $10.00 [Member]
Number Outstanding | shares	145,039
Weighted Average Remaining Years until Expiration	3 years 9 months 29 days
Weighted Average Exercise Price | $ / shares	$ 10.00
Number Exercisable | shares	145,039
Exercisable Weighted Average Exercise Price | $ / shares	$ 10.00
Exercise Price From $14.40 To $36.00 [Member]
Number Outstanding | shares	9,859
Weighted Average Remaining Years until Expiration	4 years 14 days
Weighted Average Exercise Price | $ / shares	$ 21.80
Number Exercisable | shares	9,859
Exercisable Weighted Average Exercise Price | $ / shares	$ 21.80
Exercise Price $8.00 [Member]
Number Outstanding | shares	102,089
Weighted Average Remaining Years until Expiration	8 years 4 months 6 days
Weighted Average Exercise Price | $ / shares	$ 8.00
Number Exercisable | shares	46,881
Exercisable Weighted Average Exercise Price | $ / shares	$ 8.00
Exercise Price $9.25 [Member]
Number Outstanding | shares	80,000
Weighted Average Remaining Years until Expiration	9 years 5 months 1 day
Weighted Average Exercise Price | $ / shares	$ 9.25
Number Exercisable | shares
Exercisable Weighted Average Exercise Price | $ / shares	$ 9.25