Share Based Awards (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			3 Months Ended								3 Months Ended		3 Months Ended			3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014	Jun. 30, 2014 Employee Stock Option [Member]	Jun. 30, 2014 Restricted Stock Units Award [Member]	Jun. 30, 2013 Restricted Stock Units Award [Member]	Mar. 31, 2014 Restricted Stock Units Award [Member]	Jun. 30, 2014 Employee Option [Member]	Jun. 30, 2013 Employee Option [Member]	Jun. 30, 2014 Director Options [Member]	Jun. 30, 2013 Director Options [Member]	Jun. 30, 2014 Nineteen Ninety Eight Plan [Member]	Sep. 30, 1998 Nineteen Ninety Eight Plan [Member]	Jun. 30, 2014 2005 Stock Options Plan [Member]	Oct. 31, 2005 2005 Stock Options Plan [Member]	Jun. 30, 2014 2005 Stock Options Plan [Member] Restricted Stock Units Award [Member]	Jun. 30, 2014 Employee Stock Option [Member] 2005 Stock Options Plan [Member] Executive Officer [Member]	Jun. 30, 2014 Performance Based Award [Member]	Jun. 30, 2013 Performance Based Award [Member]	Jun. 30, 2014 Performance Based Award [Member] 2005 Stock Options Plan [Member] Executive Officer [Member]
Share Based Awards (Textual) [Abstract]
Common stock reserved													8,000,000		4,800,000
Expiration date of options under 1998 Plan												10 years		10 years
Outstanding options under 1998 and 2005 plan	1,779,551		1,370,101									20,000		1,759,551
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number							64,571									53,293
Shares available for future grants														2,222,739
Expiration period (in years)														8 years			8 years
Weighted-average grant date fair value per share of stock options	$ 3.50	$ 4.87
Annualized forfeiture rate for employee options								8.40%	8.10%	0.00%	0.00%
Options granted under 2005 plan	439,650
Vesting period (in years)														5 years			5 years			3 years
Maximum number of shares per employee (in shares)																	105,000			170,000
Compensation expense	$ 790	$ 541			$ 174	$ 92												$ 104	$ 92
Total unrecognized compensation costs				6,308	713
Stock option recognized over weighted average period (in years)				3 years 10 months	1 year 26 days
Fair value of options vested	$ 1,645	$ 1,057