Subsequent Events	6 Months Ended
Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events THEMIS COMPUTER AQUISITION On December 21, 2017, the Merger Sub, entered into the Merger Agreement with Ceres, the holding company that owns Themis. Pursuant to the Merger Agreement, the Merger Sub will merge with and into Ceres with Ceres continuing as the surviving company and a wholly-owned subsidiary of Mercury. By operation of the Merger, the Company acquired both Ceres and its wholly-owned subsidiary, Themis. Based in Fremont, California, Themis is a leading designer and manufacturer of commercial, SWaP-optimized rugged servers, computers, and storage systems for U.S. and international defense programs. Under the terms of the Merger Agreement, the merger consideration (including payments with respect to outstanding stock options) consisted of an all cash purchase price of $180,000, without interest. The merger consideration is subject to post-closing adjustments based on a determination of closing net working capital, transaction expenses and net debt (all as defined in the Merger Agreement). A related escrow agreement establishes an escrow amount of $1,500 in respect of post-closing adjustments owed to the Company and an escrow amount of $900 in respect of indemnification obligations to the Company. On February 1, 2018, the Company closed the transaction for an aggregate purchase price of $180,000, plus an estimated adjustment for acquired working capital and cash. The Company drew $195,000 on the Revolver to facilitate the closing of the acquisition, with the higher amount reflecting an estimated adjustment for working capital, including cash, expected to be received with the Acquired Company at closing. The Company has not completed its preliminary purchase price allocation for Ceres as not all information required for the analysis was available. GENERAL The Company has evaluated subsequent events from the date of the consolidated balance sheet through the date the consolidated financial statements were issued.

Subsequent Events

THEMIS COMPUTER AQUISITION

On December 21, 2017, the Merger Sub, entered into the Merger Agreement with Ceres, the holding company that owns Themis. Pursuant to the Merger Agreement, the Merger Sub will merge with and into Ceres with Ceres continuing as the surviving company and a wholly-owned subsidiary of Mercury. By operation of the Merger, the Company acquired both Ceres and its wholly-owned subsidiary, Themis.

Based in Fremont, California, Themis is a leading designer and manufacturer of commercial, SWaP-optimized rugged servers, computers, and storage systems for U.S. and international defense programs.

Under the terms of the Merger Agreement, the merger consideration (including payments with respect to outstanding stock options) consisted of an all cash purchase price of $180,000, without interest. The merger consideration is subject to post-closing adjustments based on a determination of closing net working capital, transaction expenses and net debt (all as defined in the Merger Agreement). A related escrow agreement establishes an escrow amount of $1,500 in respect of post-closing adjustments owed to the Company and an escrow amount of $900 in respect of indemnification obligations to the Company.

On February 1, 2018, the Company closed the transaction for an aggregate purchase price of $180,000, plus an estimated adjustment for acquired working capital and cash. The Company drew $195,000 on the Revolver to facilitate the closing of the acquisition, with the higher amount reflecting an estimated adjustment for working capital, including cash, expected to be received with the Acquired Company at closing.

The Company has not completed its preliminary purchase price allocation for Ceres as not all information required for the analysis was available.

GENERAL

The Company has evaluated subsequent events from the date of the consolidated balance sheet through the date the consolidated financial statements were issued.