RETIREMENT AND POSTRETIREMENT PLANS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	$ 15	$ 39
Defined Benefit Plan, Interest Cost	57	90
Actuarial Adjustment	0	0
Defined Benefit Plan, Expected Return on Plan Assets	0	0
Unrecognized past service liability	0	0
Amortization of unrealized loss	12	75
Net periodic cost	84	204
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year			187
Defined Benefit Plan, Contributions by Employer	29
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	158
BMP, Employee And Outside Director Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	0	0
Defined Benefit Plan, Interest Cost	290	306
Actuarial Adjustment	0	0
Defined Benefit Plan, Expected Return on Plan Assets	(380)	(363)
Unrecognized past service liability	0	0
Amortization of unrealized loss	587	541
Net periodic cost	497	484
Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year			53
Defined Benefit Plan, Contributions by Employer	13
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	40
BMP Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year			483
Defined Benefit Plan, Contributions by Employer	0
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	0
Outside Director Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year			186
Defined Benefit Plan, Contributions by Employer	45
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	$ 141