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Fair Value Measurements - Changes in Level 3 (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
Interest rate swap agreements net of swap credit valuation |  |
Changes in Level 3 (liabilities) |  |
Beginning balance |  | $ (6)
Included in earnings (or changes in net assets) |  | 6
Asset-backed securities |  |
Changes in Level 3 |  |
Beginning balance | $ 52,941 | 154,137
Total gains or losses |  |
Included in earnings (or changes in net assets) | (28) | 3,178
Included in other comprehensive income | (541) | (1,748)
Purchases, issuances, sales, and settlements |  |
Purchases |  | 63,704
Sales | (27,455) | (135,490)
Ending balance |  | 83,781
Transfers out of Level 3 | (24,917) |
States and political subdivisions |  |
Changes in Level 3 |  |
Beginning balance | 118 | 125
Purchases, issuances, sales, and settlements |  |
Ending balance | 118 | 125
Mortgage servicing rights |  |
Changes in Level 3 |  |
Beginning balance | 5,462 | 5,807
Total gains or losses |  |
Included in earnings (or changes in net assets) | (668) | (761)
Purchases, issuances, sales, and settlements |  |
Issuances | 1,209 | 594
Settlements | (533) |
Ending balance | $ 5,470 | $ 5,640

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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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