Long-term Debt (Aggregate Annual Maturities of Long-term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Subordinated Borrowing [Line Items]
Long-term Debt, Maturity, 2014	$ 150,000
Long-term Debt, Maturity, 2015	0
Long-term Debt, Maturity, Thereafter	77,320
Senior notes	150,000		150,000
Total junior subordinated debt related to capital trusts	77,320	[1]	77,320	[1]
Total notes and subordinated debt	227,320		329,899
Senior Notes [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Maturity, 2014	150,000
Long-term Debt, Maturity, 2015	0
Long-term Debt, Maturity, Thereafter	0
Junior Subordinated Debt [Member]
Subordinated Borrowing [Line Items]
Long-term Debt, Maturity, 2014	0
Long-term Debt, Maturity, 2015	0
Long-term Debt, Maturity, Thereafter	$ 77,320

[1] The interest rate on Webster Statutory Trust I floating-rate notes, which varies quarterly based on 3-month LIBOR plus 2.95%, was 3.194% at December 31, 2013 and 3.258% at December 31, 2012.