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Sale of Grapevine, Texas Property	12 Months Ended
Sale of Grapevine, Texas Property	Dec. 31, 2019
Sale of Grapevine, Texas Property [Abstract]
Sale of Grapevine, Texas Property	4. Sale of Grapevine, Texas Property In December 2018, we completed the sale of our property located in Grapevine, Texas. The net proceeds from the sale of the property of $4.8 million was received in January 2019 and was used to reduce borrowings under our revolving credit facility. The gain on the sale of the property of $3.9 million is included in other income (expense), net in operating income on our consolidated statement of operations.