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Segment Reporting Segment Revenue and Profit or Loss Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Reconciliation of Revenue and Profit or Loss from Segments to Consolidated [Line Items] |  |  |  |  |
Rental revenue | $ 112,866 | $ 92,210 | $ 222,924 | $ 182,414 |
Intercompany rental revenue | 0 | 0 | 0 | 0 |
Tenant expense reimbursement | 18,582 | 14,304 | 36,782 | 29,457 |
Observatory revenue | 30,600 | 30,389 | 48,823 | 47,690 |
Construction revenue | 374 | 12,963 | 1,981 | 27,926 |
Third-party management and other fees | 594 | 753 | 1,040 | 1,364 |
Other revenue and fees | 1,757 | 4,549 | 5,105 | 6,623 |
Total revenues | 164,773 | 155,168 | 316,655 | 295,474 |
Property operating expenses | 37,935 | 35,149 | 80,387 | 71,009 |
Intercompany rent expense | 0 | 0 | 0 | 0 |
Ground rent expenses | 2,332 | 447 | 4,663 | 898 |
Marketing, general, and administrative expenses | 9,113 | 9,560 | 18,213 | 19,715 |
Observatory expenses | 7,420 | 7,120 | 14,397 | 14,101 |
Construction expenses | 353 | 12,795 | 3,222 | 27,078 |
Real estate taxes | 22,952 | 18,186 | 45,930 | 36,559 |
Acquisition expenses | 0 | 735 | 0 | 735 |
Depreciation and amortization | 39,629 | 28,637 | 81,047 | 58,752 |
Total operating expenses | 119,734 | 112,629 | 247,859 | 228,847 |
Total operating income (loss) | 45,039 | 42,539 | 68,796 | 66,627 |
Interest expense | (17,571) | (14,629) | (33,618) | (28,966) |
Income (loss) before income taxes | 27,468 | 27,910 | 35,178 | 37,661 |
Income tax (expense) benefit | (883) | (2,629) | (705) | (1,149) |
Net income (loss) | 26,585 | 25,281 | 34,473 | 36,512 |
Segment assets | 3,293,964 | 2,476,625 | 3,293,964 | 2,476,625 | $ 3,296,495
Expenditures for segment assets | 31,820 | 37,735 | 69,213 | 54,978 |
Intersegment Eliminations |  |  |  |  |
Reconciliation of Revenue and Profit or Loss from Segments to Consolidated [Line Items] |  |  |  |  |
Rental revenue | 0 | 0 | 0 | 0 |
Intercompany rental revenue | (18,910) | (16,298) | (30,574) | (31,566) |
Tenant expense reimbursement | 0 | 0 | 0 | 0 |
Observatory revenue | 0 | 0 | 0 | 0 |
Construction revenue | (1,400) | (901) | (3,715) | (1,863) |
Third-party management and other fees | 0 | 0 | 0 | 0 |
Other revenue and fees | 0 | 0 | 0 | 0 |
Total revenues | (20,310) | (17,199) | (34,289) | (33,429) |
Property operating expenses | 0 | 0 | 0 | 0 |
Intercompany rent expense | (18,910) | (16,298) | (30,574) | (31,566) |
Ground rent expenses | 0 | 0 | 0 | 0 |
Marketing, general, and administrative expenses | 0 | 0 | 0 | 0 |
Observatory expenses | 0 | 0 | 0 | 0 |
Construction expenses | (1,213) | (787) | (3,317) | (1,619) |
Real estate taxes | 0 | 0 | 0 | 0 |
Acquisition expenses |  | 0 |  | 0 |
Depreciation and amortization | 0 | 0 | 0 | 0 |
Total operating expenses | (20,123) | (17,085) | (33,891) | (33,185) |
Total operating income (loss) | (187) | (114) | (398) | (244) |
Interest expense | 0 | 0 | 0 | 0 |
Income (loss) before income taxes | (187) | (114) | (398) | (244) |
Income tax (expense) benefit | 0 | 0 | 0 | 0 |
Net income (loss) | (187) | (114) | (398) | (244) |
Segment assets | 0 | 0 | 0 | 0 |
Expenditures for segment assets | 0 | 0 | 0 | 0 |
Real Estate, Segment | Operating Segments |  |  |  |  |
Reconciliation of Revenue and Profit or Loss from Segments to Consolidated [Line Items] |  |  |  |  |
Rental revenue | 112,866 | 92,210 | 222,924 | 182,414 |
Intercompany rental revenue | 18,910 | 16,298 | 30,574 | 31,566 |
Tenant expense reimbursement | 18,582 | 14,304 | 36,782 | 29,457 |
Observatory revenue | 0 | 0 | 0 | 0 |
Construction revenue | 0 | 0 | 0 | 0 |
Third-party management and other fees | 594 | 753 | 1,040 | 1,364 |
Other revenue and fees | 1,757 | 4,549 | 5,105 | 6,623 |
Total revenues | 152,709 | 128,114 | 296,425 | 251,424 |
Property operating expenses | 37,935 | 35,149 | 80,387 | 71,009 |
Intercompany rent expense | 0 | 0 | 0 | 0 |
Ground rent expenses | 2,332 | 447 | 4,663 | 898 |
Marketing, general, and administrative expenses | 9,113 | 9,560 | 18,213 | 19,715 |
Observatory expenses | 0 | 0 | 0 | 0 |
Construction expenses | 0 | 0 | 0 | 0 |
Real estate taxes | 22,952 | 18,186 | 45,930 | 36,559 |
Acquisition expenses |  | 735 |  | 735 |
Depreciation and amortization | 39,542 | 28,556 | 80,775 | 58,608 |
Total operating expenses | 111,874 | 92,633 | 229,968 | 187,524 |
Total operating income (loss) | 40,835 | 35,481 | 66,457 | 63,900 |
Interest expense | (17,571) | (14,629) | (33,618) | (28,966) |
Income (loss) before income taxes | 23,264 | 20,852 | 32,839 | 34,934 |
Income tax (expense) benefit | (422) | (630) | (773) | (930) |
Net income (loss) | 22,842 | 20,222 | 32,066 | 34,004 |
Segment assets | 3,051,768 | 2,221,530 | 3,051,768 | 2,221,530 |
Expenditures for segment assets | 31,796 | 37,735 | 69,189 | 54,978 |
Observatory, Segment | Operating Segments |  |  |  |  |
Reconciliation of Revenue and Profit or Loss from Segments to Consolidated [Line Items] |  |  |  |  |
Rental revenue | 0 | 0 | 0 | 0 |
Intercompany rental revenue | 0 | 0 | 0 | 0 |
Tenant expense reimbursement | 0 | 0 | 0 | 0 |
Observatory revenue | 30,600 | 30,389 | 48,823 | 47,690 |
Construction revenue | 0 | 0 | 0 | 0 |
Third-party management and other fees | 0 | 0 | 0 | 0 |
Other revenue and fees | 0 | 0 | 0 | 0 |
Total revenues | 30,600 | 30,389 | 48,823 | 47,690 |
Property operating expenses | 0 | 0 | 0 | 0 |
Intercompany rent expense | 18,910 | 16,298 | 30,574 | 31,566 |
Ground rent expenses | 0 | 0 | 0 | 0 |
Marketing, general, and administrative expenses | 0 | 0 | 0 | 0 |
Observatory expenses | 7,420 | 7,120 | 14,397 | 14,101 |
Construction expenses | 0 | 0 | 0 | 0 |
Real estate taxes | 0 | 0 | 0 | 0 |
Acquisition expenses |  | 0 |  | 0 |
Depreciation and amortization | 87 | 77 | 171 | 137 |
Total operating expenses | 26,417 | 23,495 | 45,142 | 45,804 |
Total operating income (loss) | 4,183 | 6,894 | 3,681 | 1,886 |
Interest expense | 0 | 0 | 0 | 0 |
Income (loss) before income taxes | 4,183 | 6,894 | 3,681 | 1,886 |
Income tax (expense) benefit | (528) | (2,381) | (272) | (178) |
Net income (loss) | 3,655 | 4,513 | 3,409 | 1,708 |
Segment assets | 240,374 | 243,189 | 240,374 | 243,189 |
Expenditures for segment assets | 24 | 0 | 24 | 0 |
Other Segments | Operating Segments |  |  |  |  |
Reconciliation of Revenue and Profit or Loss from Segments to Consolidated [Line Items] |  |  |  |  |
Rental revenue | 0 | 0 | 0 | 0 |
Intercompany rental revenue | 0 | 0 | 0 | 0 |
Tenant expense reimbursement | 0 | 0 | 0 | 0 |
Observatory revenue | 0 | 0 | 0 | 0 |
Construction revenue | 1,774 | 13,864 | 5,696 | 29,789 |
Third-party management and other fees | 0 | 0 | 0 | 0 |
Other revenue and fees | 0 | 0 | 0 | 0 |
Total revenues | 1,774 | 13,864 | 5,696 | 29,789 |
Property operating expenses | 0 | 0 | 0 | 0 |
Intercompany rent expense | 0 | 0 | 0 | 0 |
Ground rent expenses | 0 | 0 | 0 | 0 |
Marketing, general, and administrative expenses | 0 | 0 | 0 | 0 |
Observatory expenses | 0 | 0 | 0 | 0 |
Construction expenses | 1,566 | 13,582 | 6,539 | 28,697 |
Real estate taxes | 0 | 0 | 0 | 0 |
Acquisition expenses |  | 0 |  | 0 |
Depreciation and amortization | 0 | 4 | 101 | 7 |
Total operating expenses | 1,566 | 13,586 | 6,640 | 28,704 |
Total operating income (loss) | 208 | 278 | (944) | 1,085 |
Interest expense | 0 | 0 | 0 | 0 |
Income (loss) before income taxes | 208 | 278 | (944) | 1,085 |
Income tax (expense) benefit | 67 | 382 | 340 | (41) |
Net income (loss) | 275 | 660 | (604) | 1,044 |
Segment assets | 1,822 | 11,906 | 1,822 | 11,906 |
Expenditures for segment assets | $ 0 | $ 0 | $ 0 | $ 0 |

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- Definition Revenue, comprised of base and incentive revenue derived from the management of joint ventures, managing third-party properties, or another entity's operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 + Details
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- Definition Other real estate revenue not otherwise specified in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4569616-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition A tax based on the assessed value of real estate by the local government. The tax is usually based on the value of property (including the land). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6419918&loc=d3e35301-107843 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=51677171&loc=d3e3636-108311 + Details
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- Definition In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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