IMPAIRED LOANS AND VALUATION ALLOWANCE FOR LOAN LOSSES - Loan Portfolio and Related Allowance (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Carrying Value
Individually Evaluated for Impairment	$ 50,757	$ 76,378
Collectively Evaluated for Impairment	1,261,699	1,147,432
Total	1,312,456	1,223,810
Associated Allowance
Individually Evaluated for Impairment	4,407	6,713
Collectively Evaluated for Impairment	15,065	14,827
Total	19,472	21,540
Construction and Land Development [Member]
Carrying Value
Individually Evaluated for Impairment	3,476	3,561
Collectively Evaluated for Impairment	63,721	59,290
Total	67,197	62,851
Associated Allowance
Individually Evaluated for Impairment	136	183
Collectively Evaluated for Impairment	660	925
Total	796	1,108
Commercial Real Estate [Member]
Carrying Value
Individually Evaluated for Impairment	11,144	33,908
Collectively Evaluated for Impairment	517,300	444,335
Total	528,444	478,243
Associated Allowance
Individually Evaluated for Impairment	507	1,938
Collectively Evaluated for Impairment	6,246	6,510
Total	6,753	8,448
Residential Real Estate [Member]
Carrying Value
Individually Evaluated for Impairment	35,127	38,137
Collectively Evaluated for Impairment	557,456	536,386
Total	592,583	574,523
Associated Allowance
Individually Evaluated for Impairment	3,649	4,410
Collectively Evaluated for Impairment	6,709	6,312
Total	10,358	10,722
Commercial and Financial [Member]
Carrying Value
Individually Evaluated for Impairment	163	0
Collectively Evaluated for Impairment	79,238	64,752
Total	79,401	64,752
Associated Allowance
Individually Evaluated for Impairment	11	0
Collectively Evaluated for Impairment	842	558
Total	853	558
Consumer [Member]
Carrying Value
Individually Evaluated for Impairment	847	772
Collectively Evaluated for Impairment	43,984	42,669
Total	44,831	43,441
Associated Allowance
Individually Evaluated for Impairment	104	182
Collectively Evaluated for Impairment	608	522
Total	$ 712	$ 704