Subsequent Event	9 Months Ended
Mar. 31, 2014
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Note 17: Subsequent Event On April 11, 2014, we announced that we have entered into a definitive merger agreement with AMETEK, Inc. (“AMETEK”) pursuant to which AMETEK has agreed to acquire all of the outstanding shares of common stock of Zygo for cash at a purchase price of $19.25 per share. The transaction, which was unanimously approved by the Board of Directors of Zygo, is subject to certain customary closing conditions, including approval of the merger by Zygo’s stockholders and regulatory clearance. On or about April 17, 2014, a putative class action complaint challenging the merger was filed in the Court of Chancery in the State of Delaware, captioned Salafia v. Zygo Corp., C.A. No. 9551-VCN. The complaint was filed on behalf of the public stockholders of Zygo and names as defendants Zygo, the members of its board of directors, AMETEK and Merger Sub. The complaint generally alleges that Zygo’s directors breached their fiduciary duties to Zygo’s stockholders by agreeing to sell Zygo for inadequate and unfair consideration and pursuant to an inadequate and unfair process, and that Zygo, AMETEK and Merger Sub aided and abetted those alleged breaches. The complaint seeks, among other things, a court order to enjoin the merger. The defendants have not yet responded to the complaint, but believe that the claims asserted against them are without merit. On or about April 21, 2014, a putative class action complaint challenging the merger was filed in the Court of Chancery in the State of Delaware, captioned Gordon v. Zygo Corporation, Case No. 9561. The complaint was filed on behalf of Natalie Gordon, on behalf of herself and other similarly situated public stockholders of Zygo, and names as defendants Zygo, the members of its board of directors, AMETEK and Merger Sub. The complaint generally alleges that the merger undervalues Zygo and was the result of an unfair sales process. The complaint alleges that Zygo’s directors breached their fiduciary duties to Zygo’s stockholders. Additionally, the complaint alleges that the defendants agreed to unreasonable deal-protection devices that discouraged potential bidders. The complaint seeks, among other things, to enjoin the merger. The defendants have not yet responded to the complaint, but believe that the claims asserted against them are without merit. By order dated April 29, 2014, the Court of Chancery consolidated the Salafia and Gordon actions under the caption In re Zygo Corp. Shareholder Litigation, Cons. C.A. 9551-VCN.

Subsequent Event

9 Months Ended

Mar. 31, 2014

Note 17: Subsequent Event

On April 11, 2014, we announced that we have entered into a definitive merger agreement with AMETEK, Inc. (“AMETEK”) pursuant to which AMETEK has agreed to acquire all of the outstanding shares of common stock of Zygo for cash at a purchase price of $19.25 per share. The transaction, which was unanimously approved by the Board of Directors of Zygo, is subject to certain customary closing conditions, including approval of the merger by Zygo’s stockholders and regulatory clearance.

On or about April 17, 2014, a putative class action complaint challenging the merger was filed in the Court of Chancery in the State of Delaware, captioned Salafia v. Zygo Corp., C.A. No. 9551-VCN. The complaint was filed on behalf of the public stockholders of Zygo and names as defendants Zygo, the members of its board of directors, AMETEK and Merger Sub. The complaint generally alleges that Zygo’s directors breached their fiduciary duties to Zygo’s stockholders by agreeing to sell Zygo for inadequate and unfair consideration and pursuant to an inadequate and unfair process, and that Zygo, AMETEK and Merger Sub aided and abetted those alleged breaches. The complaint seeks, among other things, a court order to enjoin the merger. The defendants have not yet responded to the complaint, but believe that the claims asserted against them are without merit.

On or about April 21, 2014, a putative class action complaint challenging the merger was filed in the Court of Chancery in the State of Delaware, captioned Gordon v. Zygo Corporation, Case No. 9561. The complaint was filed on behalf of Natalie Gordon, on behalf of herself and other similarly situated public stockholders of Zygo, and names as defendants Zygo, the members of its board of directors, AMETEK and Merger Sub. The complaint generally alleges that the merger undervalues Zygo and was the result of an unfair sales process. The complaint alleges that Zygo’s directors breached their fiduciary duties to Zygo’s stockholders. Additionally, the complaint alleges that the defendants agreed to unreasonable deal-protection devices that discouraged potential bidders. The complaint seeks, among other things, to enjoin the merger. The defendants have not yet responded to the complaint, but believe that the claims asserted against them are without merit.

By order dated April 29, 2014, the Court of Chancery consolidated the Salafia and Gordon actions under the caption In re Zygo Corp. Shareholder Litigation, Cons. C.A. 9551-VCN.