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Commitments and Contingencies - Contingencies (Details)
3 Months Ended
Sep. 12, 2016
USD ($)
Oct. 07, 2013
USD ($)
Mar. 31, 2017
USD ($)
lease
Assignment and Assumption of Lease Agreements      
Loss Contingencies [Line Items]      
Number of leases assigned to purchasers | lease     21
Period for which company remains secondarily liable for certain future lease payments     52 months
Outstanding lease guarantees     $ 5,536,000
Tails Inc.      
Loss Contingencies [Line Items]      
Cash consideration   $ 20,175,000  
Full House Mortgage Connection, Inc.      
Loss Contingencies [Line Items]      
Contingent consideration period 10 years    
Contingent consideration liability $ 6,300,000   $ 6,530,000
Cash consideration $ 8,000,000