Employee Benefit Plans (Details 4) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Profit Sharing Plan
Employee incentive programs
Employer contribution under plan (in dollars)	$ 0	$ 0	$ 0
401 (k) Plan
Employee incentive programs
Employer contribution under plan (in dollars)	$ 504,000	$ 498,000	$ 475,000
Employer matching contribution (as a percent)	50.00%
Vesting period of employer matching contributions	3 years