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Debt MIF Warehousing Agreement (Details) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2016 USD ($) | Dec. 31, 2015 USD ($)
Debt Instrument [Line Items] |  |
Maximum Borrowing Availability under all Credit Lines | $ 165,000 | $ 150,000
Notes payable bank - financial service operations | 91,483 | $ 123,648
Warehousing Agreement - Second Amended and Restated [Member] |  |
Debt Instrument [Line Items] |  |
Maximum Borrowing Capacity under MIF Warehousing Line | 125,000 |
M/I Financial Temporary Increase Maximum Borrowing Capacity | $ 150,000 |
LIBOR basis points | 250 |
Debt Instrument, Basis Spread on Variable Rate | 2.75% |
Repurchase Agreement [Member] |  |
Debt Instrument [Line Items] |  |
Maximum Borrowing Capacity under MIF Warehousing Line | $ 15,000 |
M/I Financial Temporary Increase Maximum Borrowing Capacity | $ 20,000 |
Minimum [Member] | Amendment No. 1 to Amended and Restated Repurchase Agreement [Member] |  |
Debt Instrument [Line Items] |  |
LIBOR basis points | 250 |
Maximum [Member] | Amendment No. 1 to Amended and Restated Repurchase Agreement [Member] |  |
Debt Instrument [Line Items] |  |
LIBOR basis points | 275 |

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- Definition Carrying value as of the balance sheet date of the outstanding short-term borrowings under a revolving line of credit used by mortgage bankers to finance the origination or purchase of loans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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