EQUITY COMPENSATION PLANS AND SHARE-BASED COMPENSATION, Stock Options (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of grant			10 years
Unrecognized compensation expense	$ 0		$ 0
Options, number of shares [Roll Forward]
Outstanding, beginning of period (in shares)			72,000
Granted (in shares)			0
Exercised (in shares)			(3,000)
Canceled or forfeited (in shares)			0
Outstanding, end of period (in shares)	69,000		69,000
Vested and expected to vest, end of period (in shares)	69,000		69,000
Exercisable, end of period (in shares)	69,000		69,000
Options, average exercise price per share [Roll Forward]
Outstanding, beginning of period (in dollars per share)			$ 20.50
Granted (in dollars per share)			$ 0
Exercised (in dollars per share)			$ 10.07
Canceled or forfeited (in dollars per share)			$ 0
Outstanding, end of period (in dollars per share)	$ 20.89		$ 20.89
Vested and expected to vest, end of period (in dollars per share)	$ 20.89		$ 20.89
Exercisable, end of period (in dollars per share)	$ 20.89		$ 20.89
Additional disclosures [Abstract]
Outstanding, weighted average remaining contractual life			6 months 18 days
Vested and expected to vest, weighted average remaining contractual life			6 months 18 days
Exercisable, weighted average remaining contractual life			6 months 18 days
Outstanding, aggregate intrinsic value	1,483,000		1,483,000
Vested and expected to vest, aggregate intrinsic value	1,483,000		1,483,000
Exercisable, aggregate intrinsic value	1,483,000		1,483,000
Total intrinsic value of stock options exercised	10,000	537,000	91,000	1,000,000
Proceeds from the exercise of stock options	$ 9,000	$ 184,000	$ 26,000	$ 261,000
Stock Options [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Stock Options [Member] | Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year