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Related Party Transactions | 12 Months Ended
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Dec. 31, 2018
Related Party Transactions [Abstract] |
Related Party Transactions | C. Related Party Transactions Certain balances held and invested in various mutual funds are managed by a related entity (the "Fund Manager"), which is related through a director who is also a greater than 10% stockholder and currently serves as an executive officer of the Fund Manager. The brokerage and fund transactions in 2018 and 2017 were directed solely at the discretion of the Company’s management. As of December 31, 2018, the balance with the Fund Manager totaled $16,270,000 , including $12,506,000 which is classified within cash and cash equivalents on the accompanying consolidated balance sheet, and $3,764,000 which is classified as marketable securities on the accompanying consolidated balance sheet. Amounts invested generated $203,000 of realized and unrealized investment income during 2018 that is included within other income, net on the accompanying unaudited consolidated statement of operations. As of December 31, 2017, the balance with the Fund Manager totaled $14,842,000, including $11,050,000 which is classified within cash and cash equivalents on the accompanying consolidated balance sheet, and $3,792,000 which is classified as marketable securities on the accompanying consolidated balance sheet. Fund management fees earned by the Fund Manager are anticipated to average less than 0.25% of the asset balances under management on an annual basis.

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -URI http://asc.fasb.org/topic&trid=2122745 + Details
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