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v3.8.0.1

Securities, Available for Sale (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) Position | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) Position | Sep. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) Position
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | $ 1,354,349 |  | $ 1,354,349 |  | $ 1,341,059
Unrealized gains | 11,564 |  | 11,564 |  | 11,097
Unrealized losses | 8,299 |  | 8,299 |  | 13,866
Estimated fair value | 1,357,614 |  | 1,357,614 |  | 1,338,290
Unrealized Loss Position, Fair Value [Abstract] |  |  |  |  |
Less than 12 months | 582,941 |  | 582,941 |  | 902,506
12 months or longer | 189,144 |  | 189,144 |  | 5,831
Total | 772,085 |  | 772,085 |  | 908,337
Unrealized Loss Position, Unrealized Losses [Abstract] |  |  |  |  |
Less than 12 months | (4,442) |  | (4,442) |  | (12,347)
12 months or longer | (3,857) |  | (3,857) |  | (1,519)
Total | $ (8,299) |  | $ (8,299) |  | $ (13,866)
Unrealized Loss Position, Number of Positions [Abstract] |  |  |  |  |
Less than 12 months | Position | 120 |  | 120 |  | 171
12 months or longer | Position | 35 |  | 35 |  | 7
Total | Position | 155 |  | 155 |  | 178
OTTI loss realized on equity investment | $ 0 | $ 0 | $ 1,300 | $ 0 |
Available-for-sale Securities, Debt Maturities, Amortized Cost [Abstract] |  |  |  |  |
Within one year | 92,405 |  | 92,405 |  |
From one to five years | 84,442 |  | 84,442 |  |
From five to ten years | 179,854 |  | 179,854 |  |
After ten years | 984,111 |  | 984,111 |  |
Amortized cost | 1,340,812 |  | 1,340,812 |  |
Available-for-sale Securities, Debt Maturities, Estimated Fair Value [Abstract] |  |  |  |  |
Within one year | 92,429 |  | 92,429 |  |
From one to five years | 84,598 |  | 84,598 |  |
From five to ten years | 180,667 |  | 180,667 |  |
After ten years | 980,181 |  | 980,181 |  |
Fair value | 1,337,875 |  | 1,337,875 |  |
Federal Agency [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | 139,935 |  | 139,935 |  | $ 175,135
Unrealized gains | 27 |  | 27 |  | 78
Unrealized losses | 544 |  | 544 |  | 805
Estimated fair value | 139,418 |  | 139,418 |  | 174,408
Unrealized Loss Position, Fair Value [Abstract] |  |  |  |  |
Less than 12 months | 45,209 |  | 45,209 |  | 119,363
12 months or longer | 54,465 |  | 54,465 |  | 0
Total | 99,674 |  | 99,674 |  | 119,363
Unrealized Loss Position, Unrealized Losses [Abstract] |  |  |  |  |
Less than 12 months | (49) |  | (49) |  | (805)
12 months or longer | (495) |  | (495) |  | 0
Total | $ (544) |  | $ (544) |  | $ (805)
Unrealized Loss Position, Number of Positions [Abstract] |  |  |  |  |
Less than 12 months | Position | 3 |  | 3 |  | 10
12 months or longer | Position | 5 |  | 5 |  | 0
Total | Position | 8 |  | 8 |  | 10
State & Municipal [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | $ 42,880 |  | $ 42,880 |  | $ 47,053
Unrealized gains | 127 |  | 127 |  | 153
Unrealized losses | 88 |  | 88 |  | 480
Estimated fair value | 42,919 |  | 42,919 |  | 46,726
Unrealized Loss Position, Fair Value [Abstract] |  |  |  |  |
Less than 12 months | 14,720 |  | 14,720 |  | 31,873
12 months or longer | 6,015 |  | 6,015 |  | 483
Total | 20,735 |  | 20,735 |  | 32,356
Unrealized Loss Position, Unrealized Losses [Abstract] |  |  |  |  |
Less than 12 months | (39) |  | (39) |  | (478)
12 months or longer | (49) |  | (49) |  | (2)
Total | $ (88) |  | $ (88) |  | $ (480)
Unrealized Loss Position, Number of Positions [Abstract] |  |  |  |  |
Less than 12 months | Position | 24 |  | 24 |  | 55
12 months or longer | Position | 8 |  | 8 |  | 1
Total | Position | 32 |  | 32 |  | 56
Mortgage-Backed [Member] |  |  |  |  |
Unrealized Loss Position, Fair Value [Abstract] |  |  |  |  |
Less than 12 months | $ 181,600 |  | $ 181,600 |  | $ 277,524
12 months or longer | 6,577 |  | 6,577 |  | 985
Total | 188,177 |  | 188,177 |  | 278,509
Unrealized Loss Position, Unrealized Losses [Abstract] |  |  |  |  |
Less than 12 months | (1,176) |  | (1,176) |  | (2,668)
12 months or longer | (107) |  | (107) |  | (13)
Total | $ (1,283) |  | $ (1,283) |  | $ (2,681)
Unrealized Loss Position, Number of Positions [Abstract] |  |  |  |  |
Less than 12 months | Position | 42 |  | 42 |  | 49
12 months or longer | Position | 5 |  | 5 |  | 4
Total | Position | 47 |  | 47 |  | 53
Mortgage-Backed, Government Sponsored Enterprises [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | $ 554,466 |  | $ 554,466 |  | $ 513,814
Unrealized gains | 3,879 |  | 3,879 |  | 3,345
Unrealized losses | 1,115 |  | 1,115 |  | 2,492
Estimated fair value | 557,230 |  | 557,230 |  | 514,667
Mortgage-Backed, U.S. Government Agency Securities [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | 26,760 |  | 26,760 |  | 14,955
Unrealized gains | 404 |  | 404 |  | 411
Unrealized losses | 168 |  | 168 |  | 189
Estimated fair value | 26,996 |  | 26,996 |  | 15,177
Collateralized Mortgage Obligations [Member] |  |  |  |  |
Unrealized Loss Position, Fair Value [Abstract] |  |  |  |  |
Less than 12 months | 339,415 |  | 339,415 |  | 473,746
12 months or longer | 119,108 |  | 119,108 |  | 0
Total | 458,523 |  | 458,523 |  | 473,746
Unrealized Loss Position, Unrealized Losses [Abstract] |  |  |  |  |
Less than 12 months | (3,175) |  | (3,175) |  | (8,396)
12 months or longer | (3,079) |  | (3,079) |  | 0
Total | $ (6,254) |  | $ (6,254) |  | $ (8,396)
Unrealized Loss Position, Number of Positions [Abstract] |  |  |  |  |
Less than 12 months | Position | 50 |  | 50 |  | 57
12 months or longer | Position | 16 |  | 16 |  | 0
Total | Position | 66 |  | 66 |  | 57
Collateralized Mortgage Obligations, Government-Sponsored Enterprises [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | $ 523,682 |  | $ 523,682 |  | $ 513,431
Unrealized gains | 626 |  | 626 |  | 532
Unrealized losses | 5,592 |  | 5,592 |  | 7,688
Estimated fair value | 518,716 |  | 518,716 |  | 506,275
Collateralized Mortgage Obligations, U.S. Government Agency Securities [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | 53,089 |  | 53,089 |  | 60,822
Unrealized gains | 169 |  | 169 |  | 184
Unrealized losses | 662 |  | 662 |  | 708
Estimated fair value | 52,596 |  | 52,596 |  | 60,298
Other Securities [Member] |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Amortized cost | 13,537 |  | 13,537 |  | 15,849
Unrealized gains | 6,332 |  | 6,332 |  | 6,394
Unrealized losses | 130 |  | 130 |  | 1,504
Estimated fair value | 19,739 |  | 19,739 |  | 20,739
Unrealized Loss Position, Fair Value [Abstract] |  |  |  |  |
Less than 12 months | 1,997 |  | 1,997 |  | 0
12 months or longer | 2,979 |  | 2,979 |  | 4,363
Total | 4,976 |  | 4,976 |  | 4,363
Unrealized Loss Position, Unrealized Losses [Abstract] |  |  |  |  |
Less than 12 months | (3) |  | (3) |  | 0
12 months or longer | (127) |  | (127) |  | (1,504)
Total | $ (130) |  | $ (130) |  | $ (1,504)
Unrealized Loss Position, Number of Positions [Abstract] |  |  |  |  |
Less than 12 months | Position | 1 |  | 1 |  | 0
12 months or longer | Position | 1 |  | 1 |  | 2
Total | Position | 2 |  | 2 |  | 2

X
- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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