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Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	(8) Related Party Transactions On January 16, 2018, the Company purchased a parcel of land from Central Properties, Inc. in which Jonathan H. Weis and his immediate family members have a material beneficial ownership interest. An independent market value appraisal was prepared prior to the determination of the purchase price of $1.1 million. The purchase was approved by the Company’s Executive Committee in accordance with Company policy and regulatory guidelines and reviewed and approved by the Board of Directors in accordance with the Company’s Code of Business Conduct and Ethics, the Code of Ethics for CEO and CFO, the Audit Committee Charter and the Company’s Related Party Transaction policy.