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Stockholders' Equity: (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified |  |  | 0 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Nov. 28, 2012 Kings Plaza item | Dec. 31, 2012 At-The-Market Stock Offering Program | Aug. 17, 2012 At-The-Market Stock Offering Program
Stock Offerings |  |  |  |  |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |  |  | $ 0.01
Maximum price of common stock available to be issued |  |  |  | $ 322,104 | $ 500,000
Maximum commission to sales agent (as a percent) |  |  |  |  | 2.00%
Restricted common stock issued for acquisition (in shares) |  |  | 535,265 |  |
Proceeds from sale |  |  |  | 177,896 |
Value of restricted shares issued for acquisition | $ 30,000 |  | $ 30,000 |  |
Number or trading days used to value restricted stock issued for acquisition |  |  | 10 |  |

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- Definition Represents the maximum aggregate offering price of common stock available to be issued under the program. + References No definition available. + Details
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- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 99-12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Face amount or stated value of common stock per share; generally not indicative of the fair market value per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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