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DEBT (Details) (USD $)
12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Apr. 30, 2014
Note Collateralized By Real Estate [Member]
Apr. 30, 2014
Bank Line of Credit due August 2014 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Apr. 30, 2013
Bank Line of Credit due August 2014 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Jul. 31, 2011
Bank Line of Credit due August 2014 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Apr. 30, 2014
Bank Line of Credit due April 2015 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Apr. 30, 2013
Bank Line of Credit due April 2015 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Jul. 31, 2011
Bank Line of Credit due April 2015 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Apr. 30, 2014
Note Payable Due February 2016 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2013
Note Payable Due February 2016 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2014
Note Payable Due May 2017 & 2016 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2013
Note Payable Due May 2017 & 2016 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2014
Note Payable Due September 2017 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2013
Note Payable Due September 2017 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2014
Note Payable Due August 2019 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2013
Note Payable Due August 2019 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2014
Note Payable Due March 2019 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2013
Note Payable Due March 2019 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2014
Note Payable Due March 2019 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2013
Note Payable Due March 2019 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2014
Note Payable Due June 14, 2014 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2013
Note Payable Due June 14, 2014 [Member]
Note Collateralized By Real Estate [Member]
Apr. 30, 2014
Note Payable Due January 2014 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Apr. 30, 2013
Note Payable Due January 2014 [Member]
Note Collateralized by First and Second Position on All Assets of The Company [Member]
Apr. 30, 2014
Note Payable Due May 2014 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2013
Note Payable Due May 2014 [Member]
Note collateralized by Aircraft and Engine Security Agreements [Member]
Apr. 30, 2014
Obligation of BHCMC, LLC Due October 2017 [Member]
Apr. 30, 2013
Obligation of BHCMC, LLC Due October 2017 [Member]
May 08, 2012
Obligation of BHCMC, LLC Due October 2017 [Member]
Apr. 30, 2014
Obligation of BHCMC, LLC Due December 2016 [Member]
Apr. 30, 2013
Obligation of BHCMC, LLC Due December 2016 [Member]
Apr. 30, 2014
Obligation of BHCMC, LLC Due August 2014 [Member]
Apr. 30, 2013
Obligation of BHCMC, LLC Due August 2014 [Member]
Apr. 30, 2014
Other Notes Payable and Capital Lease Obligations Due Nov 2013 to June 2016 [Member]
Apr. 30, 2013
Other Notes Payable and Capital Lease Obligations Due Nov 2013 to June 2016 [Member]
Promissory Notes [Abstract]                                                                        
Promissory Notes $ 1,757,000 $ 1,377,000 $ 150,000   $ 964,000 $ 908,000   $ 413,000 $ 699,000                                                      
Borrowing capacity       1,000,000     2,500,000                                                          
Long-Term Debt and Capital Lease Obligations [Abstract]                                                                        
Long-Term Debt and Capital Lease Obligations 10,728,000 14,706,000               671,000 1,008,000 232,000 301,000 342,000 428,000 312,000 368,000 323,000 373,000 788,000 949,000 320,000 333,000 0 202,000 0 219,000   2,312,000 1,900,000 4,634,000 5,949,000 1,126,000 2,127,000 80,000 137,000
Less: Current maturities 3,908,000 4,551,000                                                                    
Long-Term Debt and Capital Lease Obligations, Noncurrent 6,820,000 10,155,000                                                                    
Description of variable rate basis       prime                   prime   prime   prime   prime                                
Basis spread (in hundredths)       2.00%                   3.00%                                            
Interest rate (in hundredths)       7.00%     6.00%     6.00%   6.00%       3.36%   3.36%   2.65%   6.25%   2.00%   9.72%   12.00%     15.00%          
Interest rate, minimum (in hundredths)                                                                         
Interest rate, maximum (in hundredths)                                                                         
Floor interest rate (in hundredths)       7.00%                   6.25%                                            
Maturity date       Aug. 31, 2014     Apr. 30, 2015     Feb. 29, 2016       Sep. 30, 2017   Aug. 31, 2019   Mar. 31, 2019   Mar. 31, 2019   Jun. 14, 2015   Jan. 31, 2014   May 30, 2014   Oct. 31, 2017     Dec. 31, 2016   . NaN, NaN      
Maturity date range, start                       May 31, 2016                                             . NaN, NaN  
Maturity date range, end                       May 31, 2017                                             . NaN, NaN  
Maturities of long-term debt and capital lease obligations [Abstract]                                                                        
2014 3,908,000                                                                      
2015 3,461,000                                                                      
2016 2,424,000                                                                      
2017 665,000                                                                      
2018 270,000                                                                      
Thereafter 0                                                                      
Long-Term Debt and Capital Lease Obligations 10,728,000 14,706,000               671,000 1,008,000 232,000 301,000 342,000 428,000 312,000 368,000 323,000 373,000 788,000 949,000 320,000 333,000 0 202,000 0 219,000   2,312,000 1,900,000 4,634,000 5,949,000 1,126,000 2,127,000 80,000 137,000
Financial and Other Covenants [Abstract]                                                                        
Tangible net worth $ 1,000,000                                                                      
Debt instrument, convertible, conversion ratio 1.0