RETIREMENT AND POSTRETIREMENT PLANS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	$ 39	$ 33	$ 117	$ 99
Defined Benefit Plan, Interest Cost	90	86	270	258
Defined Benefit Plan, Expected Return on Plan Assets	0	0	0	0
Defined Benefit Plan, Amortization of Transition Obligations (Assets)	0	0	0	0
Defined Benefit Plan, Amortization of Gains (Losses)	75	29	225	87
Defined Benefit Plan, Net Periodic Benefit Cost, Total	204	148	612	444
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year					196
Defined Benefit Plan, Contributions by Employer			107
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	89		89
BMP, Employee And Outside Director Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	0	0	0	0
Defined Benefit Plan, Interest Cost	306	339	918	1,017
Defined Benefit Plan, Expected Return on Plan Assets	(363)	(361)	(1,089)	(1,083)
Defined Benefit Plan, Amortization of Transition Obligations (Assets)	0	0	0	0
Defined Benefit Plan, Amortization of Gains (Losses)	541	312	1,623	936
Defined Benefit Plan, Net Periodic Benefit Cost, Total	484	290	1,452	870
Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year					51
Defined Benefit Plan, Contributions by Employer			40
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	11		11
BMP Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year					435
Outside Director Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year					213
Defined Benefit Plan, Contributions by Employer			114
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	$ 45		$ 45