Stock-based Compensation - Options outstanding (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013
Aggregate Intrinsic Value	$ 23,800
Options Outstanding, $5.98 - 6.25
Range of Exercise Prices, low	$ 5.98
Range of Exercise Prices, high	$ 6.25
Number of Options	45,000
Weighted Average Exercise Price Per Share	$ 6.00
Options Outstanding, $6.26 - 6.50
Range of Exercise Prices, low	$ 6.26
Range of Exercise Prices, high	$ 6.50
Number of Options	30,000
Weighted Average Exercise Price Per Share	$ 6.29
Options Outstanding, $6.51 - 6.80
Range of Exercise Prices, low	$ 6.51
Range of Exercise Prices, high	$ 6.80
Number of Options	40,000
Weighted Average Exercise Price Per Share	$ 6.80
Options Outstanding, $5.98 - 6.80
Range of Exercise Prices, low	$ 5.98
Range of Exercise Prices, high	$ 6.80
Number of Options	115,000
Weighted Average Exercise Price Per Share	$ 6.35
Weighted Average Remaining Contract Life in Years	8 years 55 days
Aggregate Intrinsic Value	$ 23,800