Investments	3 Months Ended
Mar. 31, 2018
Investments, All Other Investments [Abstract]
Investments	Note 9. Investments Investment in Topgolf International, Inc. The Company owns a minority interest of approximately 14.0% in Topgolf, the owner and operator of Topgolf entertainment centers, which ownership consists of common stock and various classes of preferred stock. In connection with this investment, the Company has a preferred partner agreement with Topgolf in which the Company has preferred signage rights, rights as the preferred supplier of golf products used or offered for use at Topgolf facilities at prices no less than those paid by the Company’s customers, preferred retail positioning in the Topgolf retail stores, and other rights incidental to those listed above. The Company invested an additional $282,000 in common and preferred shares of Topgolf through a private transaction with individual shareholders during the three months ended March 31, 2018. The Company made no additional investments in Topgolf during the three months ended March 31, 2017. In December 2017, Topgolf announced that it had completed a private placement led by Fidelity Management and Research Company (the "Fidelity Investment"), in which the Company invested $20,000,000 in series F preferred shares of Topgolf. Due to the nature and timing of this transaction, the Company believes the carrying value of its series F preferred shares that were purchased in this private placement approximates fair value as of December 31, 2017. The Company is unable to estimate the fair value of its other series of preferred stock or common stock due to the dissimilar nature of conversion rights, liquidation features and other preferred terms of these shares relative to the series F preferred shares. Further, it would not be practicable for the Company to determine the discount, if any, that would be applicable to any preferred terms, as well as any other rights provided to the holders of the various series of preferred stock, nor a premium, if any, for the incremental value that might apply in the case of a change in control transaction (e.g. an initial public offering or sale of Topgolf). The Company’s Topgolf shares are illiquid and there is no assurance that all classes of Topgolf shares would receive equivalent value upon a sale or other liquidation. As of March 31, 2018 and December 31, 2017, the Company's total investment in Topgolf was $70,777,000 and $70,495,000, respectively. As of March 31, 2018, there were no impairment indicators present with respect to this investment. Based on observable market transactions prior to December 31, 2017, the Company believes that the fair value of its investment in Topgolf significantly exceeds its cost. As of March 31, 2018, this investment was accounted for at cost less impairments (if any), as its fair value is not readily determinable. In accordance with ASU No. 2016-01 (see Note 2), if there is an observable price change as a result of an orderly transaction for the identical or similar investment of the same issuer, the Company would be required to assess the fair value impact, if any, on each class of Topgolf stock held by the Company, and write such stock up or down to its estimated fair value, which could have a significant effect on the Company's financial position and results of operations. During the three months ended March 31, 2018, there were no transactions with observable price changes and as such, no adjustments to measure this investment at fair value were made as of March 31, 2018.

Note 9. Investments

Investment in Topgolf International, Inc.

The Company owns a minority interest of approximately 14.0% in Topgolf, the owner and operator of Topgolf entertainment centers, which ownership consists of common stock and various classes of preferred stock. In connection with this investment, the Company has a preferred partner agreement with Topgolf in which the Company has preferred signage rights, rights as the preferred supplier of golf products used or offered for use at Topgolf facilities at prices no less than those paid by the Company’s customers, preferred retail positioning in the Topgolf retail stores, and other rights incidental to those listed above.

The Company invested an additional $282,000 in common and preferred shares of Topgolf through a private transaction with individual shareholders during the three months ended March 31, 2018. The Company made no additional investments in Topgolf during the three months ended March 31, 2017.

In December 2017, Topgolf announced that it had completed a private placement led by Fidelity Management and Research Company (the "Fidelity Investment"), in which the Company invested $20,000,000 in series F preferred shares of Topgolf. Due to the nature and timing of this transaction, the Company believes the carrying value of its series F preferred shares that were purchased in this private placement approximates fair value as of December 31, 2017. The Company is unable to estimate the fair value of its other series of preferred stock or common stock due to the dissimilar nature of conversion rights, liquidation features and other preferred terms of these shares relative to the series F preferred shares. Further, it would not be practicable for the Company to determine the discount, if any, that would be applicable to any preferred terms, as well as any other rights provided to the holders of the various series of preferred stock, nor a premium, if any, for the incremental value that might apply in the case of a change in control transaction (e.g. an initial public offering or sale of Topgolf). The Company’s Topgolf shares are illiquid and there is no assurance that all classes of Topgolf shares would receive equivalent value upon a sale or other liquidation.

As of March 31, 2018 and December 31, 2017, the Company's total investment in Topgolf was $70,777,000 and $70,495,000, respectively.

As of March 31, 2018, there were no impairment indicators present with respect to this investment. Based on observable market transactions prior to December 31, 2017, the Company believes that the fair value of its investment in Topgolf significantly exceeds its cost. As of March 31, 2018, this investment was accounted for at cost less impairments (if any), as its fair value is not readily determinable. In accordance with ASU No. 2016-01 (see Note 2), if there is an observable price change as a result of an orderly transaction for the identical or similar investment of the same issuer, the Company would be required to assess the fair value impact, if any, on each class of Topgolf stock held by the Company, and write such stock up or down to its estimated fair value, which could have a significant effect on the Company's financial position and results of operations. During the three months ended March 31, 2018, there were no transactions with observable price changes and as such, no adjustments to measure this investment at fair value were made as of March 31, 2018.