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v3.3.1.900

Fair Value Measurements - Investments by Contractual Maturity Date (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Sep. 30, 2015
--- | --- | ---
Amortized Cost, Available-for-sale securities |  |
Amortized Cost | $ 2,300,034 | $ 2,365,450
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains | 19,990 | 28,158
Gross unrealized loss | (15,236) | (13,045)
Fair Value, Available-for-sale securities |  |
Available-for-sale securities, at fair value | $ 2,304,788 | $ 2,380,563
Yield, Available-for-sale securities |  |
Yield | 2.07% | 1.97%
Yield, Held-to-maturity securities |  |
Investments | $ 3,898,404 | $ 4,008,666
Gross unrealized gains on investments | 25,628 | 38,674
Gross unrealized losses on investments | (47,955) | (29,357)
Total financial assets | $ 3,876,077 | $ 4,017,983
Yield on investments | 2.53% | 2.46%
Obligations of U.S. government |  |
Amortized Cost, Available-for-sale securities |  |
1 to 5 years | $ 99,907 | $ 105,065
5 to 10 years | 76,604 | 119,071
Over 10 years | 254,886 | 262,832
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains, 1 to 5 years | 1,600 | 1,923
Gross unrealized gains, 5 to 10 years | 0 | 35
Gross unrealized gains, Over 10 years | 100 | 0
Gross unrealized losses, 1 to 5 years | (593) | (274)
Gross unrealized losses, 5 to 10 years | (1,852) | (1,247)
Gross unrealized losses, Over 10 years | (4,838) | (4,941)
Fair Value, Available-for-sale securities |  |
1 to 5 years | 100,914 | 106,714
5 to 10 years | 74,752 | 117,859
Over 10 years | $ 250,148 | $ 257,891
Yield, Available-for-sale securities |  |
1 to 5 years | 1.89% | 1.74%
5 to 10 years | 1.35% | 1.54%
Over 10 years | 1.34% | 1.23%
Equity securities |  |
Amortized Cost, Available-for-sale securities |  |
Within 1 year | $ 500 | $ 500
1 to 5 years | 99,922 | 99,922
5 to 10 years | 0 |
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains, Within 1 year | 11 | 17
Gross unrealized gains, 1 to 5 years | 1,124 | 1,513
Gross unrealized gains, 5 to 10 years | 0 |
Gross unrealized losses, Within 1 year | 0 | 0
Gross unrealized losses, 1 to 5 years | 0 | 0
Gross unrealized losses, 5 to 10 years | 0 |
Fair Value, Available-for-sale securities |  |
Within 1 year | 511 | 517
1 to 5 years | 101,046 | $ 101,435
5 to 10 years | $ 0 |
Yield, Available-for-sale securities |  |
Within 1 year | 1.80% | 1.80%
1 to 5 years | 1.90% | 1.90%
5 to 10 years | 0.00% |
Corporate debt securities |  |
Amortized Cost, Available-for-sale securities |  |
Within 1 year | $ 24,872 | $ 24,787
1 to 5 years | 341,470 | 311,435
5 to 10 years | 89,952 | 100,000
Over 10 years | 50,000 | 69,950
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains, Within 1 year | 103 | 191
Gross unrealized gains, 1 to 5 years | 839 | 1,190
Gross unrealized gains, 5 to 10 years | 558 | 876
Gross unrealized gains, Over 10 years | 750 | 953
Gross unrealized losses, Within 1 year | 0 | 0
Gross unrealized losses, 1 to 5 years | (108) | (58)
Gross unrealized losses, 5 to 10 years | (3,030) | (3,524)
Gross unrealized losses, Over 10 years | 0 | 0
Fair Value, Available-for-sale securities |  |
Within 1 year | 24,975 | 24,978
1 to 5 years | 342,201 | 312,567
5 to 10 years | 87,480 | 97,352
Over 10 years | $ 50,750 | $ 70,903
Yield, Available-for-sale securities |  |
Within 1 year | 0.57% | 0.53%
1 to 5 years | 1.20% | 0.88%
5 to 10 years | 1.80% | 1.47%
Over 10 years | 3.00% | 3.00%
Municipal bonds due |  |
Amortized Cost, Available-for-sale securities |  |
1 to 5 years | $ 2,292 | $ 2,285
5 to 10 years | 1,311 | 1,303
Over 10 years | 20,377 | 20,382
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains, 1 to 5 years | 3 | 8
Gross unrealized gains, 5 to 10 years | 18 | 7
Gross unrealized gains, Over 10 years | 3,230 | 3,138
Gross unrealized losses, 1 to 5 years | 0 | 0
Gross unrealized losses, 5 to 10 years | 0 | 0
Gross unrealized losses, Over 10 years | 0 | 0
Fair Value, Available-for-sale securities |  |
1 to 5 years | 2,295 | 2,293
5 to 10 years | 1,329 | 1,310
Over 10 years | $ 23,607 | $ 23,520
Yield, Available-for-sale securities |  |
1 to 5 years | 1.23% | 1.23%
5 to 10 years | 2.05% | 2.05%
Over 10 years | 6.45% | 6.45%
Agency pass-through certificates |  |
Amortized Cost, Available-for-sale securities |  |
Without single maturity date | $ 1,141,558 | $ 1,144,787
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains, Without single maturity date | 11,636 | 18,222
Gross unrealized losses, Without single maturity date | (4,105) | (2,491)
Fair Value, Available-for-sale securities |  |
Without single maturity date | $ 1,149,089 | $ 1,160,518
Yield, Available-for-sale securities |  |
Without single maturity date | 2.56% | 2.48%
Amortized Cost, Held-to-maturity securities |  |
Without single maturity date | $ 1,598,370 | $ 1,643,216
Gross Unrealized Gains / Losses, Held-to-maturity securities |  |
Gross unrealized gains, Without single maturity date | 5,638 | 10,516
Gross unrealized losses, Without single maturity date | (32,719) | (16,312)
Fair Value, Held-to-maturity securities |  |
Without single maturity date | $ 1,571,289 | $ 1,637,420
Yield, Held-to-maturity securities |  |
Without a single maturity date | 3.19% | 3.19%
Other Commercial MBS |  |
Amortized Cost, Available-for-sale securities |  |
Without single maturity date | $ 96,383 | $ 103,131
Gross Unrealized Gains / Losses, Available-for-sale securities |  |
Gross unrealized gains, Without single maturity date | 18 | 85
Gross unrealized losses, Without single maturity date | (710) | (510)
Fair Value, Available-for-sale securities |  |
Without single maturity date | $ 95,691 | $ 102,706
Yield, Available-for-sale securities |  |
Without single maturity date | 1.58% | 1.51%

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