Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Detail)

v3.7.0.1
Commitments and Contingencies (Detail)
 1 Months Ended 2 Months Ended 3 Months Ended 6 Months Ended
Apr. 01, 2017
USD ($)
Mar. 28, 2016
USD ($)
Jul. 31, 2017
USD ($)
Nov. 30, 2016
USD ($)
security_offering
Oct. 31, 2013
plaintiff
Jan. 31, 2015
USD ($)
note_offering
plaintiff
claim
Jun. 30, 2017
USD ($)
Jul. 31, 2016
USD ($)
claim
Jun. 30, 2017
USD ($)
claim
Loss Contingencies [Line Items]                  
Number of prior note offerings | note_offering           3      
Loss contingency accrual, product liability             $ 7,714,000   $ 7,714,000
Loss contingency in period             4,543,000   4,667,000
Future minimum payments due             48,835,000   $ 48,835,000
Reduction in future payments $ 0                
Subsidiaries                  
Loss Contingencies [Line Items]                  
Office space lease term   12 years              
Estimated annual rent expense   $ 1,811,000              
Financial penalties due to lease obligation   $ 25,000              
Securities America                  
Loss Contingencies [Line Items]                  
Number of plaintiffs | plaintiff         3        
Ladenburg                  
Loss Contingencies [Line Items]                  
New claims filed, number | claim               5 5
Damages sought by plaintiff               $ 5,500,000  
Future minimum payments due             $ 3,569,000   $ 3,569,000
Settled Litigation | KMS Financial Services, Inc. (KMS) | Subsequent Event                  
Loss Contingencies [Line Items]                  
Disgorgement     $ 383,000            
Litigation settlement expense     $ 100,000            
Convertible Notes Payable                  
Loss Contingencies [Line Items]                  
Proceeds from issuance Public Offering           $ 300,000      
Common Stock                  
Loss Contingencies [Line Items]                  
Proceeds from issuance Public Offering           $ 1,656,000      
Compensatory damages                  
Loss Contingencies [Line Items]                  
New claims filed, number | claim           2      
Number of plaintiffs | plaintiff           17      
Compensatory damages | Ladenburg                  
Loss Contingencies [Line Items]                  
Number of security offerings | security_offering       2          
Damages sought by plaintiff       $ 105,000,000          
Compensatory damages | ARCP July 2013 Offering                  
Loss Contingencies [Line Items]                  
Number of plaintiffs | plaintiff           8