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Assets Held for Sale	9 Months Ended
	Sep. 30, 2021
Property Plant And Equipment Assets Held For Sale Disclosure [Abstract]
Assets Held For Sale	3. Assets Held for Sale During the nine months ended September 30, 2021, we completed the sale of our three properties in Tempe, Arizona and the sale of our property in Woodbridge, Illinois for total net proceeds of approximately $27,211,000.  We intend to use the proceeds from the sales to ready our property in Chandler, Arizona to be used as our global corporate headquarters.  During the nine months ended September 30, 2020, we completed the sale of our property in Irvine, California for approximately $14,218,000.

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Real estate held for sale.

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