Description of Rights and Privileges of Capital Stock-Capital Structure Consists of Common Stock and Class A Common Stock (Details)			12 Months Ended
	Oct. 17, 2014	Jul. 25, 2014 shares	Jun. 03, 2017 vote class shares	May 30, 2015
Schedule of Stockholders Equity [Line Items]
Number of classes of capital stock | class			2
Number of votes per share of stock			10
Stock split ratio	2			2
Common Stock
Schedule of Stockholders Equity [Line Items]
Number of votes per share of stock			1
Number of votes per share of stock converted from Class A			1
Conversion of common stock, shares issued | shares			1
Additional shares authorized | shares		60,000,000
Class A Convertible Common Stock
Schedule of Stockholders Equity [Line Items]
Number of votes per share of stock			10
Additional shares authorized | shares		2,400,000