Stock-Based Compensation (Details) (USD $)	3 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Director group [Member]
Summary of stock option grants
Grantee Type	Director group		Director group
No. of Options Granted (shares)	75,490
Vesting Period	1 year or less		1 year or less
Vesting Period			1 year
Weighted Average Exercise Price (usd per share)	$ 5.67		$ 7.53
Weighted Average Grant Date Fair Value (usd per share)	$ 2.00
Director Group 1 [Member]
Summary of stock option grants
Grantee Type	Director group
No. of Options Granted (shares)	17,092
Vesting Period	3 years
Weighted Average Exercise Price (usd per share)	$ 6.83
Weighted Average Grant Date Fair Value (usd per share)	$ 3.76
Employee [Member]
Summary of stock option grants
Grantee Type	Employee group		Employee group
No. of Options Granted (shares)	438,625
Vesting Period	3 years		3 years
Weighted Average Exercise Price (usd per share)	$ 5.56		$ 7.53
Weighted Average Grant Date Fair Value (usd per share)	$ 2.44
Employee inducement (1) [Member]
Summary of stock option grants
Grantee Type	Employee inducement (1)
No. of Options Granted (shares)	20,000	[1]
Vesting Period	3 years	[1]
Weighted Average Exercise Price (usd per share)	$ 7.14	[1]
Weighted Average Grant Date Fair Value (usd per share)	$ 3.81	[1]

[1] The Company granted non-qualified performance-based stock options outside its existing stock-based compensation plans in the first quarter of 2013 to one employee in connection with the employee joining the Company.