Subsequent Events	6 Months Ended
Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	(14) Subsequent Events On January 7, 2020, the funds from one of the three letters of credit relating to purchase orders for the TRACER 1000 currently held by the Company were released, decreasing the balance of restricted cash to $122 thousand. On January 21, 2020, the Company entered into its fourth amendment of its original lease for its facility in Webster, Texas. The amended lease begins May 1, 2020 and expires April 30, 2021, with the option to renew and extend the lease for one year. On February 13, 2020, the Company entered into a private placement transaction with Thomas B. Pickens III, the Chief Executive Officer and Chairman of the Board of Directors of the Company for the issuance and sale of a secured promissory note to Mr. Pickens with a principal amount of $1,000,000. Interest on this promissory note shall accrue at 11% per annum. The principal amount and accrued interest on this promissory note shall become due and payable on September 5, 2020 (the “Maturity Date”). The Company may prepay the principal amount and all accrued interest on this promissory note at any time prior to the Maturity Date. In connection with the issuance of this promissory note, the Company, along with 1^st Detect Corporation and Astrotech Technologies, Inc. (the “Subsidiaries”), entered into a security agreement, dated as of February 13, 2020, with Mr. Pickens (the “Security Agreement”), pursuant to which the Company and the Subsidiaries granted to Mr. Pickens a security interest in all of the Company’s and the Subsidiaries’ Collateral, as such term is defined in the Security Agreement. In addition, the Subsidiaries jointly and severally agreed to guarantee and act as surety for the Company’s obligation to repay the Note pursuant to a subsidiary guarantee.

Subsequent Events

6 Months Ended

Dec. 31, 2019

(14) Subsequent Events

On January 7, 2020, the funds from one of the three letters of credit relating to purchase orders for the TRACER 1000 currently held by the Company were released, decreasing the balance of restricted cash to $122 thousand.

On January 21, 2020, the Company entered into its fourth amendment of its original lease for its facility in Webster, Texas. The amended lease begins May 1, 2020 and expires April 30, 2021, with the option to renew and extend the lease for one year.

On February 13, 2020, the Company entered into a private placement transaction with Thomas B. Pickens III, the Chief Executive Officer and Chairman of the Board of Directors of the Company for the issuance and sale of a secured promissory note to Mr. Pickens with a principal amount of $1,000,000. Interest on this promissory note shall accrue at 11% per annum. The principal amount and accrued interest on this promissory note shall become due and payable on September 5, 2020 (the “Maturity Date”). The Company may prepay the principal amount and all accrued interest on this promissory note at any time prior to the Maturity Date. In connection with the issuance of this promissory note, the Company, along with 1^st Detect Corporation and Astrotech Technologies, Inc. (the “Subsidiaries”), entered into a security agreement, dated as of February 13, 2020, with Mr. Pickens (the “Security Agreement”), pursuant to which the Company and the Subsidiaries granted to Mr. Pickens a security interest in all of the Company’s and the Subsidiaries’ Collateral, as such term is defined in the Security Agreement. In addition, the Subsidiaries jointly and severally agreed to guarantee and act as surety for the Company’s obligation to repay the Note pursuant to a subsidiary guarantee.