INVESTMENTS (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 4,355,000		$ 4,355,000		$ 10,890,000
Gross Unrealized Gain	0		0		33,000
Gross Unrealized (Loss)	(37,000)		(37,000)		(42,000)
Fair Value	4,318,000		4,318,000		10,881,000
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	39,024,000		39,024,000		36,712,000
Gross Unrecognized Gain	35,000		35,000		85,000
Gross Unrecognized (Loss)	(112,000)		(112,000)		(71,000)
Fair Value, Total investments	38,947,000		38,947,000		36,726,000
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Other-than-temporary impairment	0		0		0
Unrealized gain (loss) on available-for-sale investments, net of related income taxes	(22,000)		(22,000)		(5,000)
Redemptions of investments	0	0	1,300,000	623,000
Available-for-sale investments by stated maturity, amortized cost [Abstract]
Amortized Cost, Due in less than one year	0		0		6,509,000
Amortized Cost, Due in 1 to 4 years	4,355,000		4,355,000		4,381,000
Amortized Cost, Total investments	4,355,000		4,355,000		10,890,000
Available-for-sale investments by stated maturity, fair value [Abstract]
Fair Value, Due in less than one year	0		0		6,542,000
Fair Value, Due in 1 to 4 years	4,318,000		4,318,000		4,339,000
Fair Value, Total Investments	4,318,000		4,318,000		10,881,000
Held-to-maturity investments by stated maturity, amortized cost [Abstract]
Amortized Cost, Due in less than one year	19,508,000		19,508,000		22,560,000
Amortized Cost, Due in 1 to 4 years	19,516,000		19,516,000		14,152,000
Amortized Cost, Total investments	39,024,000		39,024,000		36,712,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Due in less than one year	19,499,000		19,499,000		22,571,000
Fair Value, Due in 1 to 4 years	19,448,000		19,448,000		14,155,000
Fair Value, Total investments	38,947,000		38,947,000		36,726,000
Certificates of Deposit [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	6,716,000		6,716,000		5,722,000
Gross Unrecognized Gain	0		0		0
Gross Unrecognized (Loss)	(8,000)		(8,000)		(8,000)
Fair Value, Total investments	6,708,000		6,708,000		5,714,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	6,708,000		6,708,000		5,714,000
Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	7,488,000		7,488,000		12,991,000
Gross Unrecognized Gain	0		0		0
Gross Unrecognized (Loss)	(2,000)		(2,000)		(1,000)
Fair Value, Total investments	7,486,000		7,486,000		12,990,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	7,486,000		7,486,000		12,990,000
Corporate Bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	21,812,000		21,812,000		14,920,000
Gross Unrecognized Gain	19,000		19,000		65,000
Gross Unrecognized (Loss)	(100,000)		(100,000)		(33,000)
Fair Value, Total investments	21,731,000		21,731,000		14,952,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	21,731,000		21,731,000		14,952,000
Municipal Bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	3,008,000		3,008,000		3,079,000
Gross Unrecognized Gain	16,000		16,000		20,000
Gross Unrecognized (Loss)	(2,000)		(2,000)		(29,000)
Fair Value, Total investments	3,022,000		3,022,000		3,070,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	3,022,000		3,022,000		3,070,000
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost					498,000
Gross Unrealized Gain					1,000
Gross Unrealized (Loss)					0
Fair Value					499,000
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,355,000		4,355,000		10,392,000
Gross Unrealized Gain	0		0		32,000
Gross Unrealized (Loss)	(37,000)		(37,000)		(42,000)
Fair Value	$ 4,318,000		$ 4,318,000		$ 10,382,000