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v3.19.1

Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2019
Investment Securities |
Schedule of amortized cost and fair value of securities |
|  | March 31, 2019 |  | December 31, 2018
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair |  | Amortized |  | Unrealized |  | Unrealized |  | Fair
(dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value |  | Cost |  | Gains |  | Losses |  | Value
U.S. Treasury securities |  | $ | — |  | $ | — |  | $ | — |  | $ | — |  | $ | 389,470 |  | $ | — |  | $ | — |  | $ | 389,470
Government agency debt securities |  |  | 24,778 |  |  | — |  |  | (13) |  |  | 24,765 |  |  | — |  |  | — |  |  | — |  |  | —
Government-sponsored enterprises debt securities |  |  | 164,718 |  |  | — |  |  | (3,123) |  |  | 161,595 |  |  | 248,372 |  |  | — |  |  | (6,778) |  |  | 241,594
Government agency mortgage-backed securities |  |  | 377,960 |  |  | — |  |  | (6,925) |  |  | 371,035 |  |  | 426,710 |  |  | — |  |  | (15,174) |  |  | 411,536
Government-sponsored enterprises mortgage-backed securities |  |  | 131,884 |  |  | 71 |  |  | (4,059) |  |  | 127,896 |  |  | 156,056 |  |  | 85 |  |  | (5,294) |  |  | 150,847
Collateralized mortgage obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government agency |  |  | 2,778,862 |  |  | 1,404 |  |  | (50,100) |  |  | 2,730,166 |  |  | 2,779,620 |  |  | — |  |  | (97,171) |  |  | 2,682,449
Government-sponsored enterprises |  |  | 1,076,399 |  |  | 4,607 |  |  | (10,803) |  |  | 1,070,203 |  |  | 620,337 |  |  | — |  |  | (17,745) |  |  | 602,592
Debt securities issued by states and political subdivisions |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 19,854 |  |  | — |  |  | — |  |  | 19,854
Total available-for-sale securities |  | $ | 4,554,601 |  | $ | 6,082 |  | $ | (75,023) |  | $ | 4,485,660 |  | $ | 4,640,419 |  | $ | 85 |  | $ | (142,162) |  | $ | 4,498,342
Schedule of amortized cost and fair value of debt securities by contractual maturity |
|  | March 31, 2019
|  | Amortized |  | Fair
(dollars in thousands) |  | Cost |  | Value
Due in one year or less |  | $ | — |  | $ | —
Due after one year through five years |  |  | 99,992 |  |  | 98,193
Due after five years through ten years |  |  | 64,726 |  |  | 63,402
Due after ten years |  |  | — |  |  | —
|  |  | 164,718 |  |  | 161,595
Government agency debt securities |  |  | 24,778 |  |  | 24,765
Government agency mortgage-backed securities |  |  | 377,960 |  |  | 371,035
Government-sponsored enterprises mortgage-backed securities |  |  | 131,884 |  |  | 127,896
Collateralized mortgage obligations: |  |  |  |  |  |
Government agency |  |  | 2,778,862 |  |  | 2,730,166
Government-sponsored enterprises |  |  | 1,076,399 |  |  | 1,070,203
Total mortgage-backed securities and collateralized mortgage obligations |  |  | 4,389,883 |  |  | 4,324,065
Total available-for-sale securities |  | $ | 4,554,601 |  | $ | 4,485,660
Schedule of gross unrealized losses and fair values of securities in a continuous loss position |
|  | Time in Continuous Loss as of March 31, 2019
|  | Less Than 12 Months |  | 12 Months or More |  | Total
|  | Unrealized |  |  |  |  | Unrealized |  |  |  |  | Unrealized |  |  |
(dollars in thousands) |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value
Government agency debt securities |  | $ | (13) |  | $ | 24,765 |  | $ | — |  | $ | — |  | $ | (13) |  | $ | 24,765
Government-sponsored enterprises debt securities |  |  | — |  |  | — |  |  | (3,123) |  |  | 161,595 |  |  | (3,123) |  |  | 161,595
Government agency mortgage-backed securities |  |  | — |  |  | — |  |  | (6,925) |  |  | 371,035 |  |  | (6,925) |  |  | 371,035
Government-sponsored enterprises mortgage-backed securities |  |  | — |  |  | — |  |  | (4,059) |  |  | 123,430 |  |  | (4,059) |  |  | 123,430
Collateralized mortgage obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government agency |  |  | (327) |  |  | 99,455 |  |  | (49,773) |  |  | 2,417,727 |  |  | (50,100) |  |  | 2,517,182
Government-sponsored enterprises |  |  | (450) |  |  | 138,465 |  |  | (10,353) |  |  | 449,284 |  |  | (10,803) |  |  | 587,749
Total available-for-sale securities with unrealized losses |  | $ | (790) |  | $ | 262,685 |  | $ | (74,233) |  | $ | 3,523,071 |  | $ | (75,023) |  | $ | 3,785,756
|  | Time in Continuous Loss as of December 31, 2018
|  | Less Than 12 Months |  | 12 Months or More |  | Total
|  | Unrealized |  |  |  |  | Unrealized |  |  |  |  | Unrealized |  |  |
(dollars in thousands) |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value
Government-sponsored enterprises debt securities |  | $ | — |  | $ | — |  | $ | (6,778) |  | $ | 157,939 |  | $ | (6,778) |  | $ | 157,939
Government agency mortgage-backed securities |  |  | — |  |  | — |  |  | (15,174) |  |  | 373,891 |  |  | (15,174) |  |  | 373,891
Government-sponsored enterprises mortgage-backed securities |  |  | (1) |  |  | 172 |  |  | (5,293) |  |  | 125,869 |  |  | (5,294) |  |  | 126,041
Collateralized mortgage obligations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Government agency |  |  | — |  |  | — |  |  | (97,171) |  |  | 2,475,532 |  |  | (97,171) |  |  | 2,475,532
Government-sponsored enterprises |  |  | — |  |  | — |  |  | (17,745) |  |  | 486,175 |  |  | (17,745) |  |  | 486,175
Total available-for-sale securities with unrealized losses |  | $ | (1) |  | $ | 172 |  | $ | (142,161) |  | $ | 3,619,406 |  | $ | (142,162) |  | $ | 3,619,578

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- Definition Tabular disclosure of fair value amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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