Junior Subordinated Debt (Tables)

12 Months Ended

Dec. 31, 2016

Junior Subordinated Debt [Abstract]

Schedule of debt of VIE where entity is not primary beneficiary

As of December 31, 2016, the Trusts had the following trust preferred securities outstanding and held the following junior subordinated debentures of the Company (dollars in thousands): 

Description	Issuance Date	Trust Preferred Securities Outstanding		Interest Rate	Trust Preferred Debt Owed To Trust		Final Maturity Date
CNBF Capital Trust I	August 1999	$	18,000	3-month LIBOR plus 2.75%	$	18,720	August 2029
NBT Statutory Trust I	November 2005		5,000	3-month LIBOR plus 1.40%		5,155	December 2035
NBT Statutory Trust II	February 2006		50,000	3-month LIBOR plus 1.40%		51,547	March 2036
Alliance Financial Capital Trust I	December 2003		10,000	3-month LIBOR plus 2.85%		10,310	January 2034
Alliance Financial Capital Trust II	September 2006		15,000	3-month LIBOR plus 1.65%		15,464	September 2036