INVESTMENTS (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 6,044,000		$ 6,044,000		$ 4,346,000
Gross Unrealized Gain	0		0		0
Gross Unrealized (Loss)	(29,000)		(29,000)		(14,000)
Fair Value	6,015,000		6,015,000		4,332,000
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	66,940,000		66,940,000		45,958,000
Gross Unrecognized Gain	3,000		3,000		47,000
Gross Unrecognized (Loss)	(215,000)		(215,000)		(73,000)
Fair Value, Total investments	66,728,000		66,728,000		45,932,000
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	(17,000)		(17,000)		(8,000)
Redemptions of investments with callable provisions	0	$ 0	0	$ 1,300,000
Available-for-sale investments by stated maturity, amortized cost [Abstract]
Amortized Cost, Due in less than one year	3,317,000		3,317,000		0
Amortized Cost, Due in 1 to 4 years	2,727,000		2,727,000		4,346,000
Amortized Cost, Total investments	6,044,000		6,044,000		4,346,000
Available-for-sale investments by stated maturity, fair value [Abstract]
Fair Value, Due in less than one year	3,305,000		3,305,000		0
Fair Value, Due in 1 to 4 years	2,710,000		2,710,000		4,332,000
Fair Value, Total Investments	6,015,000		6,015,000		4,332,000
Held-to-maturity investments by stated maturity, amortized cost [Abstract]
Amortized Cost, Due in less than one year	47,503,000		47,503,000		26,109,000
Amortized Cost, Due in 1 to 4 years	19,437,000		19,437,000		19,849,000
Amortized Cost, Total investments	66,940,000		66,940,000		45,958,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Due in less than one year	47,439,000		47,439,000		26,151,000
Fair Value, Due in 1 to 4 years	19,289,000		19,289,000		19,781,000
Fair Value, Total investments	66,728,000		66,728,000		45,932,000
Corporate Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,044,000		6,044,000		4,346,000
Gross Unrealized Gain	0		0		0
Gross Unrealized (Loss)	(29,000)		(29,000)		(14,000)
Fair Value	6,015,000		6,015,000		4,332,000
Certificates of Deposit [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,986,000		2,986,000		6,717,000
Gross Unrecognized Gain	1,000		1,000		4,000
Gross Unrecognized (Loss)	(1,000)		(1,000)		(1,000)
Fair Value, Total investments	2,986,000		2,986,000		6,720,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	2,986,000		2,986,000		6,720,000
Commercial Paper [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	9,994,000		9,994,000		13,484,000
Gross Unrecognized Gain	0		0		1,000
Gross Unrecognized (Loss)	(1,000)		(1,000)		0
Fair Value, Total investments	9,993,000		9,993,000		13,485,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	9,993,000		9,993,000		13,485,000
Corporate Bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	51,950,000		51,950,000		22,773,000
Gross Unrecognized Gain	1,000		1,000		21,000
Gross Unrecognized (Loss)	(213,000)		(213,000)		(71,000)
Fair Value, Total investments	51,738,000		51,738,000		22,723,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	51,738,000		51,738,000		22,723,000
Municipal Bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,010,000		2,010,000		2,984,000
Gross Unrecognized Gain	1,000		1,000		21,000
Gross Unrecognized (Loss)	0		0		(1,000)
Fair Value, Total investments	2,011,000		2,011,000		3,004,000
Held-to-maturity investments by stated maturity, fair value [Abstract]
Fair Value, Total investments	$ 2,011,000		$ 2,011,000		$ 3,004,000