XML 36 R25.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Securities (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Gain (Loss) on Investments [Line Items] |
Amortized Cost and Fair Value of Securities Available for Sale |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Securities Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿(in thousands) |  | March 31, 2018 |  | December 31, 2017
﻿ |  |  |  | Gross |  | Gross |  |  |  |  |  | Gross |  | Gross |  |
﻿ |  | Amortized |  | Unrealized |  | Unrealized |  | Fair |  | Amortized |  | Unrealized |  | Unrealized |  | Fair
﻿ |  | Cost |  | Gains |  | Losses |  | Value |  | Cost |  | Gains |  | Losses |  | Value
﻿U.S. Treasury and government agency securities |  | $ | 97,431 |  |  | — |  |  | 3,547 |  |  | 93,884 |  | $ | 99,535 |  | $ | — |  | $ | 2,263 |  | $ | 97,272
﻿Municipal obligations |  |  | 245,164 |  |  | 211 |  |  | 8,084 |  |  | 237,291 |  |  | 245,997 |  |  | 1,135 |  |  | 3,346 |  |  | 243,786
﻿Residential mortgage-backed securities |  |  | 1,787,382 |  |  | 3,552 |  |  | 47,391 |  |  | 1,743,543 |  |  | 1,729,989 |  |  | 5,611 |  |  | 20,387 |  |  | 1,715,213
﻿Commercial mortgage-backed securities |  |  | 715,360 |  |  | — |  |  | 35,088 |  |  | 680,272 |  |  | 704,518 |  |  | 480 |  |  | 17,863 |  |  | 687,135
﻿Collateralized mortgage obligations |  |  | 158,114 |  |  | — |  |  | 2,956 |  |  | 155,158 |  |  | 165,518 |  |  | 4 |  |  | 1,559 |  |  | 163,963
﻿Corporate debt securities |  |  | 5,500 |  |  | — |  |  | — |  |  | 5,500 |  |  | 3,500 |  |  | — |  |  | — |  |  | 3,500
﻿ |  | $ | 3,008,951 |  | $ | 3,763 |  | $ | 97,066 |  | $ | 2,915,648 |  | $ | 2,949,057 |  | $ | 7,230 |  | $ | 45,418 |  | $ | 2,910,869
﻿
Amortized Cost and Fair Value of Securities Held to Maturity |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Securities Held to Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿(in thousands) |  | March 31, 2018 |  | December 31, 2017
﻿ |  |  |  | Gross |  | Gross |  |  |  |  |  | Gross |  | Gross |  |
﻿ |  | Amortized |  | Unrealized |  | Unrealized |  | Fair |  | Amortized |  | Unrealized |  | Unrealized |  | Fair
﻿ |  | Cost |  | Gains |  | Losses |  | Value |  | Cost |  | Gains |  | Losses |  | Value
﻿U.S. Treasury and government agency securities |  | $ | 50,000 |  |  | — |  |  | 576 |  |  | 49,424 |  | $ | 50,000 |  | $ | — |  | $ | 289 |  | $ | 49,711
﻿Municipal obligations |  |  | 707,581 |  |  | 1,315 |  |  | 13,453 |  |  | 695,443 |  |  | 723,094 |  |  | 8,323 |  |  | 4,245 |  |  | 727,172
﻿Residential mortgage-backed securities |  |  | 695,655 |  |  | 721 |  |  | 10,624 |  |  | 685,752 |  |  | 725,748 |  |  | 4,175 |  |  | 2,690 |  |  | 727,233
﻿Commercial mortgage-backed securities |  |  | 316,966 |  |  | — |  |  | 11,400 |  |  | 305,566 |  |  | 317,185 |  |  | 40 |  |  | 3,915 |  |  | 313,310
﻿Collateralized mortgage obligations |  |  | 1,244,226 |  |  | 391 |  |  | 28,507 |  |  | 1,216,110 |  |  | 1,161,484 |  |  | 572 |  |  | 17,472 |  |  | 1,144,584
﻿ |  | $ | 3,014,428 |  | $ | 2,427 |  | $ | 64,560 |  | $ | 2,952,295 |  | $ | 2,977,511 |  | $ | 13,110 |  | $ | 28,611 |  | $ | 2,962,010
﻿
Available for Sale [Member] |
Gain (Loss) on Investments [Line Items] |
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity |
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
Debt Securities Available for Sale |  | Amortized |  | Fair
(in thousands) |  | Cost |  | Value
Due in one year or less |  | $ | 7,388 |  | $ | 7,408
Due after one year through five years |  |  | 45,623 |  |  | 45,740
Due after five years through ten years |  |  | 1,249,127 |  |  | 1,202,997
Due after ten years |  |  | 1,706,813 |  |  | 1,659,503
Total available for sale debt securities |  | $ | 3,008,951 |  | $ | 2,915,648
﻿ |  |  |  |  |  |
﻿
Securities with Unrealized Losses |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿March 31, 2018 |  | Losses < 12 months |  | Losses 12 months or > |  | Total
﻿ |  |  |  | Gross |  |  |  | Gross |  |  |  | Gross
﻿ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
﻿(in thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
﻿U.S. Treasury and government agency securities |  | $ | 43,521 |  |  | 1,214 |  |  | 50,362 |  |  | 2,333 |  | $ | 93,883 |  | $ | 3,547
﻿Municipal obligations |  |  | 54,330 |  |  | 948 |  |  | 169,119 |  |  | 7,136 |  |  | 223,449 |  |  | 8,084
﻿Residential mortgage-backed securities |  |  | 654,990 |  |  | 14,667 |  |  | 850,853 |  |  | 32,724 |  |  | 1,505,843 |  |  | 47,391
﻿Commercial mortgage-backed securities |  |  | 279,631 |  |  | 8,091 |  |  | 400,641 |  |  | 26,997 |  |  | 680,272 |  |  | 35,088
﻿Collateralized mortgage obligations |  |  | 122,186 |  |  | 2,324 |  |  | 32,972 |  |  | 632 |  |  | 155,158 |  |  | 2,956
﻿ |  | $ | 1,154,658 |  | $ | 27,244 |  | $ | 1,503,947 |  | $ | 69,822 |  | $ | 2,658,605 |  | $ | 97,066
﻿ ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Available for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿December 31, 2017 |  | Losses < 12 months |  | Losses 12 months or > |  | Total
﻿ |  |  |  | Gross |  |  |  | Gross |  |  |  | Gross
﻿ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
﻿(in thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
﻿U.S. Treasury and government agency securities |  | $ | 45,616 |  | $ | 42 |  | $ | 51,157 |  | $ | 2,221 |  | $ | 96,773 |  | $ | 2,263
﻿Municipal obligations |  |  | 2,768 |  |  | 11 |  |  | 173,530 |  |  | 3,335 |  |  | 176,298 |  |  | 3,346
﻿Residential mortgage-backed securities |  |  | 461,835 |  |  | 4,195 |  |  | 898,099 |  |  | 16,192 |  |  | 1,359,934 |  |  | 20,387
﻿Commercial mortgage-backed securities |  |  | 203,618 |  |  | 995 |  |  | 411,046 |  |  | 16,868 |  |  | 614,664 |  |  | 17,863
﻿Collateralized mortgage obligations |  |  | 128,174 |  |  | 1,076 |  |  | 35,488 |  |  | 483 |  |  | 163,662 |  |  | 1,559
﻿ |  | $ | 842,011 |  | $ | 6,319 |  | $ | 1,569,320 |  | $ | 39,099 |  | $ | 2,411,331 |  | $ | 45,418
﻿
Held to Maturity [Member] |
Gain (Loss) on Investments [Line Items] |
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity |
﻿ |  |  |  |  |  |
Debt Securities Held to Maturity |  | Amortized |  | Fair
(in thousands) |  | Cost |  | Value
Due in one year or less |  | $ | 4,190 |  | $ | 4,205
Due after one year through five years |  |  | 132,047 |  |  | 131,197
Due after five years through ten years |  |  | 1,478,419 |  |  | 1,446,343
Due after ten years |  |  | 1,399,772 |  |  | 1,370,550
Total held to maturity securities |  | $ | 3,014,428 |  | $ | 2,952,295
﻿
Securities with Unrealized Losses |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Held to maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿March 31, 2018 |  | Losses < 12 months |  | Losses 12 months or > |  | Total
﻿ |  |  |  | Gross |  |  |  | Gross |  |  |  | Gross
﻿ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
﻿(in thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
﻿U.S. Treasury and government agency securities |  | $ | — |  |  | — |  |  | 49,424 |  |  | 576 |  | $ | 49,424 |  | $ | 576
﻿Municipal obligations |  |  | 341,011 |  |  | 4,530 |  |  | 221,438 |  |  | 8,923 |  |  | 562,449 |  |  | 13,453
﻿Residential mortgage-backed securities |  |  | 403,985 |  |  | 4,090 |  |  | 224,200 |  |  | 6,534 |  |  | 628,185 |  |  | 10,624
﻿Commercial mortgage-backed securities |  |  | 234,468 |  |  | 6,845 |  |  | 71,098 |  |  | 4,555 |  |  | 305,566 |  |  | 11,400
﻿Collateralized mortgage obligations |  |  | 672,660 |  |  | 12,567 |  |  | 441,866 |  |  | 15,940 |  |  | 1,114,526 |  |  | 28,507
﻿ |  | $ | 1,652,124 |  | $ | 28,032 |  | $ | 1,008,026 |  | $ | 36,528 |  | $ | 2,660,150 |  | $ | 64,560
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Held to maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿December 31, 2017 |  | Losses < 12 months |  | Losses 12 months or > |  | Total
﻿ |  |  |  | Gross |  |  |  | Gross |  |  |  | Gross
﻿ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
﻿(in thousands) |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
﻿U.S. Treasury and government agency securities |  | $ | — |  | $ | — |  | $ | 49,711 |  | $ | 289 |  | $ | 49,711 |  | $ | 289
﻿Municipal obligations |  |  | 14,603 |  |  | 19 |  |  | 230,960 |  |  | 4,226 |  |  | 245,563 |  |  | 4,245
﻿Residential mortgage-backed securities |  |  | 8,815 |  |  | 99 |  |  | 230,277 |  |  | 2,591 |  |  | 239,092 |  |  | 2,690
﻿Commercial mortgage-backed securities |  |  | 174,882 |  |  | 744 |  |  | 72,499 |  |  | 3,171 |  |  | 247,381 |  |  | 3,915
﻿Collateralized mortgage obligations |  |  | 570,289 |  |  | 5,653 |  |  | 472,536 |  |  | 11,819 |  |  | 1,042,825 |  |  | 17,472
﻿ |  | $ | 768,589 |  | $ | 6,515 |  | $ | 1,055,983 |  | $ | 22,096 |  | $ | 1,824,572 |  |  | 28,611
﻿

X
- Definition Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27405-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6435544&loc=d3e41834-113960 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5086-111524 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62557-112803 + Details
Name: | us-gaap_HeldToMaturitySecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
Name: | us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_GainLossOnInvestmentsByCategoryAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GainLossOnInvestmentsByCategoryAxis=us-gaap_HeldtomaturitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |