Securities (Details) - Securities In An Unrealized Loss Position $ in Thousands	Sep. 30, 2015 USD ($) security	Dec. 31, 2014 USD ($) security
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	178	195
Fair Value - Less Than 12 Months	$ 73,378	$ 65,694
Unrealized Losses - Less Than 12 Months	491	579
Fair Value - 12 Months or Longer	281,238	402,418
Unrealized Losses - 12 Months or Longer	20,027	22,656
Fair Value - Total	354,616	468,112
Unrealized Losses - Total	$ 20,518	$ 23,235
U.S. Agency Securities
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	1	1
Fair Value - Less Than 12 Months	$ 2,037	$ 1,943
Unrealized Losses - Less Than 12 Months	3	10
Fair Value - 12 Months or Longer	0	0
Unrealized Losses - 12 Months or Longer	0	0
Fair Value - Total	2,037	1,943
Unrealized Losses - Total	$ 3	$ 10
Collateralized Mortgage Obligations
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	53	87
Fair Value - Less Than 12 Months	$ 38,105	$ 61,321
Unrealized Losses - Less Than 12 Months	156	559
Fair Value - 12 Months or Longer	197,119	284,327
Unrealized Losses - 12 Months or Longer	3,126	6,423
Fair Value - Total	235,224	345,648
Unrealized Losses - Total	$ 3,282	$ 6,982
Other Mortgage Backed Securities
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	6	11
Fair Value - Less Than 12 Months	$ 20,003	$ 1,113
Unrealized Losses - Less Than 12 Months	64	1
Fair Value - 12 Months or Longer	9,699	39,043
Unrealized Losses - 12 Months or Longer	171	309
Fair Value - Total	29,702	40,156
Unrealized Losses - Total	$ 235	$ 310
Municipal Securities
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	109	91
Fair Value - Less Than 12 Months	$ 11,540	$ 1,317
Unrealized Losses - Less Than 12 Months	96	9
Fair Value - 12 Months or Longer	43,657	53,987
Unrealized Losses - 12 Months or Longer	553	1,009
Fair Value - Total	55,197	55,304
Unrealized Losses - Total	$ 649	$ 1,018
Trust-preferred collateralized debt obligations
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	8	4
Fair Value - Less Than 12 Months	$ 1,693	$ 0
Unrealized Losses - Less Than 12 Months	172	0
Fair Value - 12 Months or Longer	28,444	22,791
Unrealized Losses - 12 Months or Longer	16,154	14,880
Fair Value - Total	30,137	22,791
Unrealized Losses - Total	$ 16,326	$ 14,880
Equity Securities
Securities (Details) - Securities In An Unrealized Loss Position [Line Items]
Number of Securities (securities) | security	1	1
Fair Value - Less Than 12 Months	$ 0	$ 0
Unrealized Losses - Less Than 12 Months	0	0
Fair Value - 12 Months or Longer	2,319	2,270
Unrealized Losses - 12 Months or Longer	23	35
Fair Value - Total	2,319	2,270
Unrealized Losses - Total	$ 23	$ 35