Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract]
Basis of accounting	Basis of Accounting The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP").
Use of estimates	Use of estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions, that it deems reasonable, that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from such estimates and assumptions.
Principles of consolidation	Principles of consolidation The consolidated financial statements are comprised of the accounts of the Company and its wholly owned subsidiaries. All material intercompany transactions and balances have been eliminated.
Equity method investment	Equity method investment Investments and ownership interests are accounted for under the equity method of accounting if the Company has the ability to exercise significant influence, but not control (under GAAP), over the investment. Investments accounted for under the equity method are carried at cost, plus or minus the Company's equity in the increases and decreases in the net assets after the date of acquisition and certain other adjustments. The Company's share of income or loss for equity method investments is recorded in the consolidated statements of operations as equity income (loss). Dividends received, if any, would reduce the carrying amount of the Company's investment.
Non-controlling interests	Non-controlling interests Non-controlling interests as presented in the Company's consolidated financial statements represents the minority ownership's investment in 111 West 57^th Investment LLC, a Delaware limited liability company ("Investment LLC"). For additional information see Note 4.
Cash and cash equivalents	Cash and cash equivalents Highly liquid investments, consisting principally of funds held in short-term money market accounts, with original maturities of less than three months, are classified as cash equivalents. The majority of the Company's cash and cash equivalents balances are maintained with a limited number of major financial institutions. Cash and cash equivalents balances at institutions may, at times, be above the Federal Deposit Insurance Corporation insured limit per account.
Income taxes	Income taxes The Company and its domestic subsidiaries file a consolidated federal income tax return. The Company recognizes both the current and deferred tax consequences of all transactions that have been recognized in the consolidated financial statements, calculated based on the provisions of enacted tax laws, including the tax rates in effect for current and future years. Net deferred tax assets are recognized immediately when a more likely than not criterion is met; that is, a greater than 50% probability exists that the tax benefits will actually be realized sometime in the future. For additional information including a discussion of income tax matters see Note 9.
Earnings per share	Earnings per share Basic earnings per share ("EPS") excludes dilution and is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution of EPS that could occur if options to issue common stock were exercised. There were no stock options outstanding at December 31, 2016 and December 31, 2015.
Stock-based compensation	Stock-based compensation Under the Company's 1993 Stock Incentive Plan (the "1993 Plan"), the Company may grant to officers and employees of the Company and its subsidiaries, stock options ("Options"), stock appreciation rights ("SARs"), restricted stock awards ("Restricted Stock"), merit awards ("Merit Awards") and performance share awards ("Performance Shares"), through May 28, 2018. A pre-determined number of shares of the Company's Common Stock are reserved for issuance under the 1993 Plan (upon the exercise of Options and Stock Appreciation Rights, upon awards of Restricted Stock and Performance Shares); however, only a portion of such shares shall be available for issuance for Restricted Stock Awards and Merit Awards. Shares issued pursuant to the 1993 Plan shall be authorized but unissued shares of Common Stock. Options may be granted as incentive stock options ("ISOs") intended to qualify for favorable tax treatment under Federal tax law or as nonqualified stock options ("NQSOs"). SARs may be granted with respect to any Options granted under the 1993 Plan and may be exercised only when the underlying Option is exercisable. The 1993 Plan requires that the exercise price of all Options and SARs be equal to or greater than the fair value of the Company's Common Stock on the date of grant of that Option. The term of any NQSO, ISO or related SAR cannot exceed terms under federal tax law and/or as prescribed in the 1993 Plan. Subject to the terms of the 1993 Plan and any additional restrictions imposed at the time of grant, Options and any related SARs ordinarily will become exercisable pursuant to a vesting period prescribed at the time of grant. In the case of a "Change of Control" of the Company (as defined in the 1993 Plan), options granted pursuant to the 1993 Plan may become fully exercisable as to all optioned shares from and after the date of such Change in Control in the discretion of the Committee or as may otherwise be provided in the grantee's Option agreement. Death, retirement, or absence for disability will not result in the cancellation of any Options. Stock-based compensation expense for all stock-based compensation awards for which vesting is based solely on employment service, are based on the grant date fair value estimated in accordance with accounting principles generally accepted in the United States of America. The Company recognizes these compensation costs for only those shares expected to vest, on a straight-line basis over the requisite service period of the award, which is generally the option vesting term. Compensation expense relating to stock options is recorded in the Consolidated Statement of Operations, with a corresponding increase in additional paid-in capital in the Consolidated Statement of Changes in Stockholders' Equity. See Note 8 herein for a further discussion of stock-based compensation.
Depreciation	Depreciation Depreciation expense for the Company's owned building is recorded on a straight-line basis over the useful lives of the assets. Tenant improvements if any, would be depreciated over the lesser of the remaining life of the tenants' lease or the estimated useful lives of the improvements. For additional information see Note 3.
New Accounting Pronouncements	New Accounting Pronouncements There are no new accounting pronouncements that could materially affect the Company's consolidated financial statements.