Quarterly report pursuant to Section 13 or 15(d)

Line of Credit (Details)

v3.5.0.2
Line of Credit (Details)
7 Months Ended 9 Months Ended
Feb. 29, 2016
Feb. 28, 2016
Sep. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Line of Credit Facility [Line Items]        
Revolving credit facility     $ 80,000,000 $ 80,000,000
Revolving credit facility, maturity date       Jan. 02, 2017
Available borrowings for general corporate purposes     20,000,000 $ 20,000,000
Financial covenants, minimum net worth     $ 250,000,000 $ 250,000,000
Financial covenants, percent of net income added to net worth requirement     50.00% 50.00%
Financial covenants, percent of proceeds from stock issuance added to net worth requirement     100.00% 100.00%
Financial covenants, maximum EBITDA ratio     3.0 3.0
Financial covenants, minimum interest coverage ratio     2.0 2.0
Revolving credit facility, borrowings outstanding     $ 0 $ 0
Total outstanding letters of credit     $ 4,500,000 4,500,000
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Revolving credit facility, unused annual commitment fee 0.50% 0.25%    
Letter of Credit        
Line of Credit Facility [Line Items]        
Revolving credit facility, unused annual commitment fee     2.00%  
Credit facility, unused portion     $ 75,500,000 $ 75,500,000
London Interbank Offered Rate (LIBOR) | Letter of Credit        
Line of Credit Facility [Line Items]        
Basis spread on variable rate     2.00%