Quarterly report pursuant to Section 13 or 15(d)

Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements (Details)

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Employee Benefit 401(k) Plans And Deferred Retirement Compensation Agreements (Details) - USD ($)
 3 Months Ended 6 Months Ended
May. 11, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Minimum employee subscription rate, percentage of compensation       1.00%  
Maximum employee subscription rate, percentage of compensation       60.00%  
Employee pre-tax contributions vested percentage       100.00%  
Vesting rate       20.00%  
Percentage vested after total service period       100.00%  
Employees' vesting rights       The Company did not make any contributions to the 401(k) plan in the six months ended June 30, 2015. Participants are always 100 percent vested in their pre-tax contributions and will begin vesting in any matching or profit sharing contributions made on their behalf after two years of service with the Company at a rate of 20 percent per year, becoming 100 percent vested after a total of six years of service with the Company.  
Expenses for employee benefit plan   $ 0 $ 27,000 $ 0 $ 53,000
Minimum [Member]          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Employer contribution vesting period       2 years  
Maximum [Member]          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Employer contribution vesting period       6 years  
Messr Lefkowitz And Messr Thomas [Member]          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Expenses for employee benefit plan       $ 1,200,000  
Messr Hersh [Member]          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Expenses for employee benefit plan $ 2,300,000        
Deferred Retirement Compensation Units [Member]          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Expenses for employee benefit plan   $ 0 $ 142,000 $ 0 $ 1,300,000