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Related-Party Transactions	3 Months Ended
Related-Party Transactions	Mar. 31, 2018
Related Party Transactions [Abstract]
Related-Party Transactions	Related-Party Transactions Deferred Compensation In July 2017, the Company’s board of directors elected to terminate the Company’s deferred compensation plans. Consequently, while participant compensation remains deferred at March 31, 2018, the plans are no longer active. In accordance with applicable regulations, distribution of the remaining assets and settlement of the deferred compensation obligation will be made to the participants in July 2018 which is no earlier than one year from the date the plans were terminated. The total value of the deferred compensation obligation for all participants was $4.1 million at both March 31, 2018 and December 31, 2017. These totals include a fair value of approximately $16,000 and $18,000 of the Company’s common stock, for each of the respective periods, with the remaining balance in various publicly traded equities, bonds, and cash.