Stock-Based Compensation (Schedule Of Nonvested Share Activity) (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Equity Incentive Plan, Non-Vested Portion [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested at Period Start, Options	1,152,828	668,722
Granted, Options	14,000	25,000
Vested, Options	(8,333)
Forfeited, Options		(2,518)
Non-vested at Period End, Options	1,158,495	691,204
Non-vested at Period Start, Options, Weighted-Average Grant Date Fair Value	$ 0.84	$ 1.69
Granted, Options, Weighted-Average Grant Date Fair Value	$ 0.38	$ 0.71
Vested, Options, Weighted-Average Grant Date Fair Value	$ 0.71
Forfeited, Options, Weighted-Average Grant Date Fair Value		$ 1.61
Non-vested at Period End, Options, Weighted-Average Grant Date Fair Value	$ 0.83	$ 1.65
Stock Bonus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested at Period Start, shares	358,855	167,680
Granted, shares	11,000
Vested, shares		(47,004)
Non-vested at Period End, shares	369,855	120,676
Non-vested at Period Start, Weighted-Average Grant Date Fair Value	$ 1.22	$ 2.44
Granted, Weighted-Average Grant Date Fair Value	$ 0.69
Vested Weighted-Average Grant Date Fair Value		$ 2.49
Non-vested at Period End, Weighted-Average Grant Date Fair Value	$ 1.21	$ 2.42