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Fair Value Measurements - Changes in Level 3 Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Liability beginning balance | $ 683 | $ 3,833 | $ 1,222 | $ 3,653
Total realized and unrealized gains (losses) | 496 | 645 | 1,035 | 465
Liability ending balance | 187 | 3,188 | 187 | 3,188
Investments [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Asset beginning balance | 9,114 | 8,779 | 9,508 | 5,946
Total realized and unrealized gains (losses) | (427) | (254) | (812) | (341)
Purchases and issuances | 29 | 180 | 417 | 4,444
Sales and settlements | (83) | (282) | (369) | (1,006)
Transfers in (out) |  |  | (111) | (620)
Asset ending balance | 8,633 | 8,423 | 8,633 | 8,423
Interest Rate Lock Commitments [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Asset beginning balance | 5,060 | 10,528 | 7,576 | 2,375
Total realized and unrealized gains (losses) | 5,748 | (5,017) | 3,232 | 3,136
Asset ending balance | 10,808 | 5,511 | 10,808 | 5,511
Auction Rate Securities [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Asset beginning balance | 100,384 | 92,548 | 91,422 | 85,124
Total realized and unrealized gains (losses) | 1,799 | (645) | 1,736 | (971)
Purchases and issuances | 5,600 | 2,375 | 16,325 | 16,550
Sales and settlements | (11,300) | (6,955) | (13,000) | (13,380)
Asset ending balance | 96,483 | 87,323 | 96,483 | 87,323
Auction Rate Securities Purchase Commitment [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Liability beginning balance | 1,034 | 1,514 | 902 | 2,600
Total realized and unrealized gains (losses) | 557 | 477 | 425 | 1,563
Liability ending balance | 477 | 1,037 | 477 | 1,037
Municipal Obligations [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Asset beginning balance | 62 | 52 | 164 | 236
Total realized and unrealized gains (losses) | 3 | 77 | (79) | (107)
Sales and settlements |  |  | (20) |
Asset ending balance | $ 65 | $ 129 | $ 65 | $ 129

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- Definition Fair value assets measured on recurring basis change in realized and unrealized gain (loss) included in other income. + References No definition available. + Details
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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis asset purchases sales issuances settlements. + References No definition available. + Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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