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COMMITMENTS AND CONTINGENCIES - Narrative (Details) $ in Millions | Jun. 06, 2011 USD ($) | Dec. 09, 2010 lender | Jun. 30, 2016 joint_venture | Aug. 25, 2011 USD ($)
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South Edge [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of co-venturers liable to Meritage | joint_venture |  |  | 4 |
JP Morgan Chase Bank N.A. v. South Edge LLC, Case No. 10-32968-bam [Member] | Pending Litigation [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of lenders filing petition for involuntary bankruptcy | lender |  | 3 |  |
Amount requested in demand for arbitration related to alleged breaches | $ 13.2 |  |  |
Litigation judgment amount with interest |  |  |  | $ 16.6
South Edge Guarantee [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Interest in joint venture |  |  | 3.53% |

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