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Business Combinations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Dec. 31, 2013
Residential/Planned Community Purposes
acre
Dec. 31, 2013
Commercial and Light Industrial Use
acre
Dec. 31, 2013
LandWell
Dec. 31, 2013
Basic Management Inc.
Dec. 31, 2013
Basic Management Inc And Landwell
Dec. 31, 2013
Basic Management Inc And Landwell
Promissory Note
Dec. 31, 2013
Basic Management Inc And Landwell
Face value
Deferred payment
Dec. 31, 2013
Basic Management Inc And Landwell
Present value
Deferred payment
Dec. 31, 2013
Certain Real Property and Option to Acquire Remaining Parcels
Dec. 31, 2013
General Partner
Basic Management Inc.
LandWell
Dec. 31, 2013
Aggregate General And Limited Interests
LandWell
Nov. 30, 2013
Entity One
LandWell
Nov. 30, 2013
Entity One
Basic Management Inc.
Nov. 30, 2013
Nevada Environmental Response Trust
LandWell
Nov. 30, 2013
Nevada Environmental Response Trust
Basic Management Inc.
Nov. 30, 2013
Entity Three
LandWell
Nov. 30, 2013
Entity Three
Basic Management Inc.
Business Combinations Discontinued Operations And Related Transactions [Line Items]                                      
Equity ownership percentage         12.00% 32.00%                          
Noncontrolling interest, ownership percentage                           21.00% 32.00% 15.00% 31.00% 2.00% 5.00%
Controlling interest in subsidiary         27.00% 63.00%           50.00% 77.00%            
Business acquisition, percentage of voting interests acquired         15.00% 31.00%                          
Total fair value of consideration             $ 32.6                        
Fair value of consideration, cash             5.3                        
Business combination consideration transferred, liabilities incurred               19.1 11.1 8.2                  
Interest on promissory note and deferred payment               3.00% 3.00%                    
Discount rate                   3.00%                  
Land held for development     2,100 400                              
Recognized pre-tax gain on business combination             26.6                        
Business acquisition estimated fair value             43.4                        
Business acquisition at carrying value             16.8                        
Bargain purchase gain recognized             28.0                        
Land held for development 160.4 158.1         158.1       14.9                
Gain on bargain purchase and remeasurement of our existing investment in acquiree             $ 54.6