|
INVESTMENT SECURITIES (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
|
Mar. 31, 2014
Position
|
Dec. 31, 2013
Position
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
$ 2,460,730 |
$ 2,217,165 |
| Gross unrealized gains |
38,441 |
27,104 |
| Gross unrealized losses |
28,885 |
58,106 |
| Total available-for-sale investment securities |
2,470,286 |
2,186,163 |
| Other Equity Securities [Abstract] |
|
|
| Amortized cost |
35,935 |
32,562 |
| Fair value |
35,935 |
32,562 |
| Available-for-Sale Securities in Unrealized Loss Positions, Number of Positions [Abstract] |
|
|
| Available-for-sale securities in unrealized loss positions less than 12 months qualitative disclosure, number of positions |
283 |
390 |
| Available-for-sale securities in unrealized loss positions for 12 months or longer, number of positions |
41 |
17 |
| Total available-for-sale securities in unrealized loss positions, number of positions |
324 |
407 |
| Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, fair value |
1,044,846 |
1,451,284 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, fair value |
28,647 |
16,397 |
| Available-for-sale securities, unrealized loss position, fair value |
1,073,493 |
1,467,681 |
| Available-for-Sale Securities, Debt Maturities, Gross Unrealized Losses [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, gross unrealized losses |
26,762 |
56,464 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, gross unrealized losses |
2,123 |
1,642 |
| Available-for-sale securities, unrealized loss position, gross unrealized losses |
28,885 |
58,106 |
| Available-for-Sale Securities, Amortized Cost [Abstract] |
|
|
| Available-for-sale securities, amortized cost, due in one year or less |
61,273 |
|
| Available-for-sale securities, amortized cost, due in one to five years |
164,805 |
|
| Available-for-sale securities, amortized cost, due in five through ten years |
1,677,793 |
|
| Available-for-sale securities, amortized cost, due after ten years |
287,047 |
|
| Available-for-sale securities, amortized cost, with a single maturity date, subtotal |
2,190,918 |
|
| Available-for-sale government agency mortgage-backed securities, amortized cost, without a single maturity date |
248,785 |
|
| Available-for-sale government agency collateralized mortgage obligations, amortized cost, without a single maturity date |
20,777 |
|
| Available-for-sale securities, amortized cost |
2,460,480 |
|
| Available-for-Sale Securities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, fair value, due in one year or less |
62,343 |
|
| Available-for-sale securities, fair value, due in one to five years |
169,923 |
|
| Available-for-sale securities, fair value, due in five through ten years |
1,670,155 |
|
| Available-for-sale securities, fair value, due after ten years |
290,993 |
|
| Available-for-sale securities, fair value, subtotal |
2,193,414 |
|
| Available-for-sale government agency mortgage-backed securities, fair value, without single maturity date |
254,850 |
|
| Available-for-sale government agency collateralized mortgage obligations, fair value, without single maturity date |
21,589 |
|
| Available-for-sale securities, fair value |
2,469,853 |
|
|
U.S. Treasury and Agency Obligations [Member]
|
|
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
1,479,306 |
1,252,332 |
| Gross unrealized gains |
7,582 |
1,119 |
| Gross unrealized losses |
20,157 |
41,304 |
| Total available-for-sale investment securities |
1,466,731 |
1,212,147 |
| Available-for-Sale Securities in Unrealized Loss Positions, Number of Positions [Abstract] |
|
|
| Available-for-sale securities in unrealized loss positions less than 12 months qualitative disclosure, number of positions |
34 |
43 |
| Available-for-sale securities in unrealized loss positions for 12 months or longer, number of positions |
0 |
0 |
| Total available-for-sale securities in unrealized loss positions, number of positions |
34 |
43 |
| Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, fair value |
840,063 |
1,181,214 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, fair value |
0 |
0 |
| Available-for-sale securities, unrealized loss position, fair value |
840,063 |
1,181,214 |
| Available-for-Sale Securities, Debt Maturities, Gross Unrealized Losses [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, gross unrealized losses |
20,157 |
41,304 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, gross unrealized losses |
0 |
0 |
| Available-for-sale securities, unrealized loss position, gross unrealized losses |
20,157 |
41,304 |
|
Obligations of State and Political Subdivisions [Member]
|
|
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
684,713 |
665,441 |
| Gross unrealized gains |
19,984 |
15,919 |
| Gross unrealized losses |
5,571 |
12,378 |
| Total available-for-sale investment securities |
699,126 |
668,982 |
| Available-for-Sale Securities in Unrealized Loss Positions, Number of Positions [Abstract] |
|
|
| Available-for-sale securities in unrealized loss positions less than 12 months qualitative disclosure, number of positions |
211 |
302 |
| Available-for-sale securities in unrealized loss positions for 12 months or longer, number of positions |
31 |
9 |
| Total available-for-sale securities in unrealized loss positions, number of positions |
242 |
311 |
| Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, fair value |
139,641 |
195,526 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, fair value |
15,923 |
4,974 |
| Available-for-sale securities, unrealized loss position, fair value |
155,564 |
200,500 |
| Available-for-Sale Securities, Debt Maturities, Gross Unrealized Losses [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, gross unrealized losses |
4,355 |
11,774 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, gross unrealized losses |
1,216 |
604 |
| Available-for-sale securities, unrealized loss position, gross unrealized losses |
5,571 |
12,378 |
|
Government Agency Mortgage-Backed Securities [Member]
|
|
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
248,785 |
250,431 |
| Gross unrealized gains |
9,086 |
8,660 |
| Gross unrealized losses |
3,021 |
4,113 |
| Total available-for-sale investment securities |
254,850 |
254,978 |
| Available-for-Sale Securities in Unrealized Loss Positions, Number of Positions [Abstract] |
|
|
| Available-for-sale securities in unrealized loss positions less than 12 months qualitative disclosure, number of positions |
38 |
43 |
| Available-for-sale securities in unrealized loss positions for 12 months or longer, number of positions |
8 |
6 |
| Total available-for-sale securities in unrealized loss positions, number of positions |
46 |
49 |
| Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, fair value |
65,142 |
68,917 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, fair value |
9,981 |
8,713 |
| Available-for-sale securities, unrealized loss position, fair value |
75,123 |
77,630 |
| Available-for-Sale Securities, Debt Maturities, Gross Unrealized Losses [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, gross unrealized losses |
2,250 |
3,262 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, gross unrealized losses |
771 |
851 |
| Available-for-sale securities, unrealized loss position, gross unrealized losses |
3,021 |
4,113 |
|
Corporate Debt Securities [Member]
|
|
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
26,899 |
26,932 |
| Gross unrealized gains |
794 |
873 |
| Gross unrealized losses |
136 |
218 |
| Total available-for-sale investment securities |
27,557 |
27,587 |
| Available-for-Sale Securities in Unrealized Loss Positions, Number of Positions [Abstract] |
|
|
| Available-for-sale securities in unrealized loss positions less than 12 months qualitative disclosure, number of positions |
0 |
1 |
| Available-for-sale securities in unrealized loss positions for 12 months or longer, number of positions |
1 |
1 |
| Total available-for-sale securities in unrealized loss positions, number of positions |
1 |
2 |
| Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, fair value |
0 |
3,026 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, fair value |
2,737 |
2,703 |
| Available-for-sale securities, unrealized loss position, fair value |
2,737 |
5,729 |
| Available-for-Sale Securities, Debt Maturities, Gross Unrealized Losses [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, gross unrealized losses |
0 |
31 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, gross unrealized losses |
136 |
187 |
| Available-for-sale securities, unrealized loss position, gross unrealized losses |
136 |
218 |
|
Government Agency Collateralized Mortgage Obligations [Member]
|
|
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
20,777 |
21,779 |
| Gross unrealized gains |
812 |
362 |
| Gross unrealized losses |
0 |
93 |
| Total available-for-sale investment securities |
21,589 |
22,048 |
| Available-for-Sale Securities in Unrealized Loss Positions, Number of Positions [Abstract] |
|
|
| Available-for-sale securities in unrealized loss positions less than 12 months qualitative disclosure, number of positions |
0 |
1 |
| Available-for-sale securities in unrealized loss positions for 12 months or longer, number of positions |
1 |
1 |
| Total available-for-sale securities in unrealized loss positions, number of positions |
1 |
2 |
| Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, fair value |
0 |
2,601 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, fair value |
6 |
7 |
| Available-for-sale securities, unrealized loss position, fair value |
6 |
2,608 |
| Available-for-Sale Securities, Debt Maturities, Gross Unrealized Losses [Abstract] |
|
|
| Available-for-sale securities, unrealized loss position, less than 12 months, gross unrealized losses |
0 |
93 |
| Available-for-sale securities, unrealized loss position, 12 months or longer, gross unrealized losses |
0 |
0 |
| Available-for-sale securities, unrealized loss position, gross unrealized losses |
0 |
93 |
|
Marketable Equity Security [Member]
|
|
|
| Available-for-Sale Portfolio [Abstract] |
|
|
| Amortized cost |
250 |
250 |
| Gross unrealized gains |
183 |
171 |
| Gross unrealized losses |
0 |
0 |
| Total available-for-sale investment securities |
433 |
421 |
|
Federal Home Loan Bank Common Stock [Member]
|
|
|
| Other Equity Securities [Abstract] |
|
|
| Amortized cost |
15,436 |
12,053 |
| Fair value |
15,436 |
12,053 |
|
Federal Reserve Bank Common Stock [Member]
|
|
|
| Other Equity Securities [Abstract] |
|
|
| Amortized cost |
16,050 |
16,050 |
| Fair value |
16,050 |
16,050 |
|
Other Equity Securities [Member]
|
|
|
| Other Equity Securities [Abstract] |
|
|
| Amortized cost |
4,449 |
4,459 |
| Fair value |
$ 4,449 |
$ 4,459 |