Stock-based Compensation - Options outstanding (Details) (USD $)	Dec. 31, 2012	Mar. 31, 2012
Aggregate Intrinsic Value		$ 127,363
Options Outstanding, $6.06 - 6.29
Range of Exercise Prices, low	$ 6.06
Range of Exercise Prices, high	$ 6.29
Number of Options	40,000
Weighted Average Exercise Price Per Share	$ 6.23
Options Outstanding, $6.30 - 6.80
Range of Exercise Prices, low	$ 6.30
Range of Exercise Prices, high	$ 6.80
Number of Options	40,000
Weighted Average Exercise Price Per Share	$ 6.80
Options Outstanding, $5.25 - 6.80
Range of Exercise Prices, low	$ 5.25
Range of Exercise Prices, high	$ 6.80
Number of Options	80,000
Weighted Average Exercise Price Per Share	$ 6.52
Weighted Average Remaining Contract Life in Years	8 years 99 days
Aggregate Intrinsic Value