Long-term debt: (Details) (USD $)	0 Months Ended	12 Months Ended			0 Months Ended							0 Months Ended			0 Months Ended		0 Months Ended	12 Months Ended			0 Months Ended		0 Months Ended	12 Months Ended			0 Months Ended		0 Months Ended	3 Months Ended			0 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended	0 Months Ended
	Dec. 18, 2009	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Oct. 02, 2013 Subsequent event	Oct. 02, 2013 Calvin A. Wallen, III Subsequent event Series B Convertible Preferred Stock	Jun. 30, 2013 Revolver	Mar. 05, 2007 Revolver Original Agreement	Dec. 18, 2009 Revolver Second Amendment	Dec. 18, 2009 Revolver Second Amendment Maximum	Aug. 30, 2010 Revolver Third Amendment	Mar. 05, 2007 Credit Facility with WFEC Original Agreement	Mar. 31, 2013 Credit Facility with WFEC Original Agreement	Dec. 31, 2012 Credit Facility with WFEC Original Agreement	Mar. 05, 2007 Credit Facility with WFEC Original Agreement Wells Fargo Bank prime rate	Mar. 05, 2007 Credit Facility with WFEC Original Agreement Maximum	Dec. 18, 2009 Credit Facility with WFEC Second Amendment	Jun. 30, 2012 Credit Facility with WFEC Second Amendment	Jun. 30, 2011 Credit Facility with WFEC Second Amendment	Dec. 31, 2012 Credit Facility with WFEC Second Amendment	Dec. 18, 2009 Credit Facility with WFEC Second Amendment Wells Fargo Bank prime rate	Dec. 18, 2009 Credit Facility with WFEC Second Amendment Maximum	Aug. 30, 2010 Credit Facility with WFEC Third Amendment	Jun. 30, 2012 Credit Facility with WFEC Third Amendment	Jun. 30, 2011 Credit Facility with WFEC Third Amendment	Dec. 31, 2012 Credit Facility with WFEC Third Amendment	Aug. 30, 2010 Credit Facility with WFEC Third Amendment Wells Fargo Bank prime rate	Aug. 30, 2010 Credit Facility with WFEC Third Amendment Maximum	Mar. 28, 2013 Credit Facility with WFEC Fourth Amendment	Mar. 31, 2013 Credit Facility with WFEC Fourth Amendment	Jun. 30, 2013 Credit Facility with WFEC Fourth Amendment	Jun. 30, 2013 Term Loan	Mar. 05, 2007 Term Loan Original Agreement	Dec. 18, 2009 Term Loan Second Amendment	Jun. 30, 2013 Term Loan Second Amendment	Aug. 30, 2010 Term Loan Third Amendment	Jun. 30, 2013 Subordinated promissory note Calvin A. Wallen, III	Dec. 18, 2009 Subordinated promissory note Calvin A. Wallen, III	Oct. 02, 2013 Subordinated promissory note Calvin A. Wallen, III Subsequent event	Jun. 30, 2013 Subordinated promissory note Calvin A. Wallen, III Wells Fargo Bank prime rate	Oct. 02, 2013 Senior secured notes due October 2, 2016 Subsequent event	Oct. 02, 2013 Credit Agreement Wells Fargo Bank prime rate Subsequent event	Oct. 02, 2013 Credit Agreement WFEC Subsequent event	Oct. 02, 2013 Credit Agreement Cubic Louisiana Subsequent event
Long-term debt
Revolving credit facility								$ 20,000,000		$ 40,000,000	$ 30,000,000																																$ 10,000,000
Convertible term loan, principal amount																																5,000,000	5,000,000	5,000,000		5,000,000		2,000,000			66,000,000
Interest rate basis												prime rate			prime rate		prime rate				prime rate		prime rate				prime rate										prime rate			prime rate		Wells Fargo Bank prime rate
Interest rate spread over basis (as a percent)												2.00%			2.00%		2.00%				2.00%		2.00%				2.00%										1.00%			1.00%		2.00%
Number of common shares into which term loan may be converted																																	5,044,900		5,000,000
Conversion price (in dollars per share)																															$ 0.20		$ 0.9911
Funded amount used to retire previously outstanding senior debt																																	5,000,000
Expiration period of warrants												5 years
Number of shares of common stock for which warrants are issued																2,500,000						5,000,000						1,000,000			8,500,000
Exercise price of warrants (in dollars per share)												$ 0.9911	$ 0.20	$ 0.20			$ 0.9911			$ 0.20			$ 1.00			$ 0.20					$ 0.20
Increase in additional paid-in capital due to value assigned to the warrants		902,161										1,314,289					8,031,896						516,882
Term of debt, used as amortization period																							2 years
Amortization of discount																		5,515,769	5,500,699					287,689	239,741
Debt and warrants issuance costs																	50,000						100,000						260,000
Debt issuance costs capitalized and amortized over the term of debt																							89,451
Amortization of debt issuance costs		520,000	68,554	60,368														19,762	19,708					48,791	40,660
Renewal fee																														260,000
Borrowing base under the revolving credit facility									25,000,000
Number of common stock shares for which the expiration date of outstanding warrants is extended	2,500,000																2,500,000
Fair market value assigned to warrants for which expiration date was extended				516,882													923,302
Extinguishment of debt																																		1,877,494
Write off of deferred loan cost and discounts																	129,871
Beneficial conversion feature																	5,027,494
Beneficial conversion feature in convertible debt reduced due to limitations to the fair value to debt																	3,122,506
Debt discount recorded																	13,955,198						527,430								902,161
Gain on debt extinguishment		0															1,747,623
Unamortized deferred loan cost written off																	(26,947)
Amount outstanding under the revolving credit facility							20,870,000
Debt due to affiliate		2,000,000	2,000,000
Interest rate (as a percent)																																					4.25%
Repayment of debt																																					0						5,000,000
Loan discount written off																	(102,924)
Proceeds from Call Option Structured Derivative					35,000,000
Proceeds from the issuance of the senior secured notes																																									101,000,000
Preferred stock, stated value						2,115,000
Preferred shares issued						2,115
Accrued and unpaid interest																																							114,986
Principal Amount Outstanding
Total long-term debt (including current portion)		27,865,110	37,000,000																																									20,865,110
Less current portion		27,865,110	37,000,000																																		2,000,000		2,000,000
Total long-term debt		0	0
Maturities of Debt
Fiscal 2013		27,865,110
Fiscal 2014 and thereafter		$ 101,000,000