|
Securities (Details) (USD $)
|
12 Months Ended |
|
Dec. 31, 2014
item
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Available for sale |
|
|
|
| Amortized Cost |
$ 749,364,000 |
$ 833,735,000 |
|
| Gross Unrealized Gains |
10,740,000 |
11,350,000 |
|
| Gross Unrealized Losses |
(1,039,000) |
(3,775,000) |
|
| Fair Value |
759,065,000 |
841,310,000 |
|
| Held to maturity |
|
|
|
| Amortized Cost |
2,373,000 |
834,000 |
|
| Gross Unrealized Gains |
55,000 |
1,000 |
|
| Gross Unrealized Losses |
(3,000) |
(4,000) |
|
| Fair Value |
2,425,000 |
831,000 |
|
| Available for sale, Amortized Cost |
|
|
|
| Due in one year or less |
125,672,000 |
|
|
| Due after one year through five years |
347,781,000 |
|
|
| Due after five years through ten years |
120,891,000 |
|
|
| Due after ten years |
150,076,000 |
|
|
| Amortized Cost |
744,420,000 |
|
|
| Available for sale, Fair Value |
|
|
|
| Due in one year or less |
126,252,000 |
|
|
| Due after one year through five years |
349,168,000 |
|
|
| Due after five years through ten years |
124,483,000 |
|
|
| Due after ten years |
152,817,000 |
|
|
| Fair Value |
752,720,000 |
|
|
| Held to maturity, Amortized Cost |
|
|
|
| Due in one year or less |
72,000 |
|
|
| Due after one year through five years |
636,000 |
|
|
| Due after five years through ten years |
1,665,000 |
|
|
| Amortized Cost |
2,373,000 |
834,000 |
|
| Held to maturity, Fair Value |
|
|
|
| Due in one year or less |
72,000 |
|
|
| Due after one year through five years |
636,000 |
|
|
| Due after five years through ten years |
1,717,000 |
|
|
| Fair Value |
2,425,000 |
831,000 |
|
| Realized gains and losses related to sales of securities available for sale |
|
|
|
| Gross security gains |
807,000 |
599,000 |
1,602,000 |
| Gross security (losses) |
(31,000) |
(46,000) |
(5,000) |
| Net security gains |
776,000 |
553,000 |
1,597,000 |
| Tax provision related to net realized gains (losses) |
300,000 |
200,000 |
600,000 |
| Carrying amount of investment securities pledged as collateral |
536,200,000 |
428,700,000 |
|
| Available for sale, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
67,415,000 |
199,636,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
65,898,000 |
8,492,000 |
|
| Total |
133,313,000 |
208,128,000 |
|
| Available for sale, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
234,000 |
3,481,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
805,000 |
294,000 |
|
| Total |
1,039,000 |
3,775,000 |
|
| Held to maturity, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
534,000 |
597,000 |
|
| Total |
534,000 |
597,000 |
|
| Held to maturity, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
3,000 |
4,000 |
|
| Total |
3,000 |
4,000 |
|
| Number of securities in unrealized loss position |
202 |
|
|
| Securities in unrealized loss position as a percentage of aggregate carrying value of investments |
0.80% |
|
|
| Debt securities |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
744,420,000 |
829,621,000 |
|
| Gross Unrealized Gains |
9,339,000 |
9,598,000 |
|
| Gross Unrealized Losses |
(1,039,000) |
(3,775,000) |
|
| Fair Value |
752,720,000 |
835,444,000 |
|
| U.S. Treasury securities |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
50,280,000 |
102,463,000 |
|
| Gross Unrealized Gains |
328,000 |
244,000 |
|
| Gross Unrealized Losses |
(2,000) |
(67,000) |
|
| Fair Value |
50,606,000 |
102,640,000 |
|
| Available for sale, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
|
25,830,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
366,000 |
|
|
| Total |
366,000 |
25,830,000 |
|
| Available for sale, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
|
67,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
2,000 |
|
|
| Total |
2,000 |
67,000 |
|
| Obligations of U.S. government corporations and agencies |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
166,207,000 |
254,998,000 |
|
| Gross Unrealized Gains |
981,000 |
2,741,000 |
|
| Gross Unrealized Losses |
(178,000) |
(328,000) |
|
| Fair Value |
167,010,000 |
257,411,000 |
|
| Available for sale, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
|
25,946,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
25,118,000 |
|
|
| Total |
25,118,000 |
25,946,000 |
|
| Available for sale, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
|
328,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
178,000 |
|
|
| Total |
178,000 |
328,000 |
|
| Obligations of states and political subdivisions |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
218,250,000 |
272,077,000 |
|
| Gross Unrealized Gains |
2,672,000 |
2,887,000 |
|
| Gross Unrealized Losses |
(761,000) |
(2,812,000) |
|
| Fair Value |
220,161,000 |
272,152,000 |
|
| Held to maturity |
|
|
|
| Amortized Cost |
1,359,000 |
834,000 |
|
| Gross Unrealized Gains |
15,000 |
1,000 |
|
| Gross Unrealized Losses |
(3,000) |
(4,000) |
|
| Fair Value |
1,371,000 |
831,000 |
|
| Held to maturity, Amortized Cost |
|
|
|
| Amortized Cost |
1,359,000 |
834,000 |
|
| Held to maturity, Fair Value |
|
|
|
| Fair Value |
1,371,000 |
831,000 |
|
| Available for sale, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
40,385,000 |
92,703,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
40,201,000 |
8,492,000 |
|
| Total |
80,586,000 |
101,195,000 |
|
| Available for sale, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
140,000 |
2,518,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
621,000 |
294,000 |
|
| Total |
761,000 |
2,812,000 |
|
| Held to maturity, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
534,000 |
597,000 |
|
| Total |
534,000 |
597,000 |
|
| Held to maturity, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
3,000 |
4,000 |
|
| Total |
3,000 |
4,000 |
|
| Residential mortgage-backed securities |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
230,596,000 |
174,699,000 |
|
| Gross Unrealized Gains |
5,062,000 |
3,571,000 |
|
| Gross Unrealized Losses |
(22,000) |
(535,000) |
|
| Fair Value |
235,636,000 |
177,735,000 |
|
| Available for sale, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
10,630,000 |
53,543,000 |
|
| Total |
10,630,000 |
53,543,000 |
|
| Available for sale, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
22,000 |
535,000 |
|
| Total |
22,000 |
535,000 |
|
| Corporate debt securities |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
79,087,000 |
25,384,000 |
|
| Gross Unrealized Gains |
296,000 |
155,000 |
|
| Gross Unrealized Losses |
(76,000) |
(33,000) |
|
| Fair Value |
79,307,000 |
25,506,000 |
|
| Available for sale, Fair Value |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
16,400,000 |
1,614,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
213,000 |
|
|
| Total |
16,613,000 |
1,614,000 |
|
| Available for sale, Unrealized Losses |
|
|
|
| Continuous unrealized losses existing for less than 12 months, gross |
72,000 |
33,000 |
|
| Continuous unrealized losses existing greater than 12 months, gross |
4,000 |
|
|
| Total |
76,000 |
33,000 |
|
| Mutual funds and other equity securities |
|
|
|
| Available for sale |
|
|
|
| Amortized Cost |
4,944,000 |
4,114,000 |
|
| Gross Unrealized Gains |
1,401,000 |
1,752,000 |
|
| Fair Value |
6,345,000 |
5,866,000 |
|
| Commercial mortgage-backed securities |
|
|
|
| Held to maturity |
|
|
|
| Amortized Cost |
1,014,000 |
|
|
| Gross Unrealized Gains |
40,000 |
|
|
| Fair Value |
1,054,000 |
|
|
| Held to maturity, Amortized Cost |
|
|
|
| Amortized Cost |
1,014,000 |
|
|
| Held to maturity, Fair Value |
|
|
|
| Fair Value |
$ 1,054,000 |
|
|