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Long-Term Debt and Capital Lease Obligations (Details)
3 Months Ended
Nov. 30, 2015
USD ($)
lender
Sep. 30, 2016
USD ($)
Jul. 01, 2016
USD ($)
Payments
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Debt Instrument [Line Items]          
Current portion of long-term debt   $ 15,497,000   $ 18,339,000  
Other assets   16,575,000   $ 18,383,000  
New Credit Agreement          
Debt Instrument [Line Items]          
Debt term 5 years        
Maximum borrowing capacity $ 175,000,000        
Additional number of lenders | lender 5        
Debt instrument, additional borrowing amount $ 75,000,000        
CoCo Debt          
Debt Instrument [Line Items]          
Long-term Debt   20,793,000      
Current portion of long-term debt   7,656,000      
Other assets   20,793,000      
Other assets, current   7,656,000      
Subordinated Debt | Other note payable          
Debt Instrument [Line Items]          
Long-term Debt     $ 3,838,000    
Number of installment payments | Payments     7    
Debt instrument, periodic payment   552,000      
Stated finance charge rate     2.19%    
Minimum | New Credit Agreement          
Debt Instrument [Line Items]          
Fixed charge coverage ratio 1.25        
Line Of Credit Facility, Dividend Restrictions Threshold $ 10,000,000        
Unused borrowing capacity, fee 0.20%        
Maximum | New Credit Agreement          
Debt Instrument [Line Items]          
Line of Credit Facility, Leverage Ratio 3.00        
Unused borrowing capacity, fee 0.375%        
Credit Agreement Two | Subordinated Debt | Other note payable          
Debt Instrument [Line Items]          
Long-term Debt   2,199,000      
Letters of Credit | New Credit Agreement          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 15,000,000        
Letters of Credit | Minimum | New Credit Agreement          
Debt Instrument [Line Items]          
Debt issuance costs, fee 1.50%        
Letters of Credit | Maximum | New Credit Agreement          
Debt Instrument [Line Items]          
Debt issuance costs, fee 2.25%        
Revolving Credit Facility | New Credit Agreement          
Debt Instrument [Line Items]          
Debt term 5 years        
Maximum borrowing capacity $ 100,000,000        
Term Loan | New Credit Agreement          
Debt Instrument [Line Items]          
Debt term 5 years        
Debt instrument, amount $ 75,000,000        
Debt Instrument, Percent Of Outstanding Amount, Payable Quarterly 1.875%        
Debt instrument, covenant compliance, conditional term rate one 50.00%        
Debt instrument, covenant compliance, conditional term rate two 0.00%        
Debt instrument, covenant compliance, conditional term rate based on net cash proceeds from asset sales subject to certain reinvestment rights 100.00%        
Debt instrument, covenant compliance, conditional term rate based on net cash proceeds from issuance of debt other than debt permitted under credit facility 100.00%        
Debt instrument, covenant compliance, conditional term rate based on net cash proceeds from events of loss subject to certain reinvestments rights 100.00%        
Long-term Debt   70,781,000      
Current portion of long-term debt   5,625,000      
Base Rate | Minimum | New Credit Agreement          
Debt Instrument [Line Items]          
Variable rate of debt 0.50%        
Base Rate | Maximum | New Credit Agreement          
Debt Instrument [Line Items]          
Variable rate of debt 1.25%        
LIBOR | Minimum | New Credit Agreement          
Debt Instrument [Line Items]          
Variable rate of debt 1.50%        
LIBOR | Maximum | New Credit Agreement          
Debt Instrument [Line Items]          
Variable rate of debt 2.25%        
Oil and Gas          
Debt Instrument [Line Items]          
Second cash payment $ 7,500,000        
Business Combination, Net Working Capital Adjustment 2,957,000       $ 2,354,000
Oil and Gas | New Credit Agreement          
Debt Instrument [Line Items]          
Letters of credit, remaining borrowing capacity   97,346,000      
Borrowings 102,000,000 $ 70,781,000      
Oil and Gas | Revolving Credit Facility | New Credit Agreement          
Debt Instrument [Line Items]          
Borrowings 27,000,000        
Debt instrument, fee amount 1,916,000        
Oil and Gas | Term Loan | New Credit Agreement          
Debt Instrument [Line Items]          
Debt instrument, stated interest rate   2.0244%      
Borrowings 75,000,000        
Debt instrument, effective rate   2.07%      
Debt instrument, fee amount $ 1,332,000