XML 138 R111.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Segment Reporting (Schedule of Segments) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) segments | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segments |  |  |  |  |  |  |  |  | 4 |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | $ 187,684 | $ 191,180 | $ 211,207
Interest income |  |  |  |  |  |  |  |  | 106,548 | 129,153 | 134,687
Other income |  |  |  |  |  |  |  |  | 188,091 | 46,514 | 49,924
Land development revenue |  |  |  |  |  |  |  |  | 196,879 | 88,340 | 100,216
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 13,015 | 77,349 | 32,153
Income from discontinued operations | $ 0 | $ 0 | $ (173) | $ (4,766) | $ 7,336 | $ 3,721 | $ 3,633 | $ 3,580 | 4,939 | 18,270 | 15,077
Gain from discontinued operations |  |  |  |  |  |  |  |  | 123,418 | 0 | 0
Income from sales of real estate |  |  |  |  |  |  |  |  | 92,049 | 105,296 | 93,816
Total revenue and other earnings |  |  |  |  |  |  |  |  | 912,623 | 656,102 | 637,080
Real estate expense |  |  |  |  |  |  |  |  | (147,617) | (137,522) | (146,509)
Land development cost of sales |  |  |  |  |  |  |  |  | (180,916) | (62,007) | (67,382)
Other expense |  |  |  |  |  |  |  |  | (20,954) | (5,883) | (6,374)
Allocated interest expense |  |  |  |  |  |  |  |  | (194,686) | (221,398) | (224,639)
Allocated general and administrative |  |  |  |  |  |  |  |  | (80,070) | (73,138) | (69,264)
Segment profit (loss) |  |  |  |  |  |  |  |  | 288,380 | 156,154 | 122,912
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | (5,828) | (12,514) | 36,567
Impairment of assets |  |  |  |  |  |  |  |  | 32,379 | 14,484 | 10,524
Depreciation and amortization |  |  |  |  |  |  |  |  | 49,033 | 51,660 | 62,045
Capitalized expenditures |  |  |  |  |  |  |  |  | 166,336 | 169,999 | 183,269
Real estate, net | 1,282,031 |  |  |  | 1,387,274 |  |  |  | 1,282,031 | 1,387,274 |
Real estate available and held for sale | 68,588 |  |  |  | 237,531 |  |  |  | 68,588 | 237,531 |
Total real estate | 1,350,619 |  |  |  | 1,624,805 |  |  |  | 1,350,619 | 1,624,805 |
Land and development, net | 860,311 |  |  |  | 945,565 |  |  |  | 860,311 | 945,565 |
Loans receivable and other lending investments, net | 1,300,655 |  |  |  | 1,450,439 |  |  |  | 1,300,655 | 1,450,439 |
Other investments | 321,241 |  |  |  | 214,406 |  |  |  | 321,241 | 214,406 |
Total portfolio assets | 3,832,826 |  |  |  | 4,235,215 |  |  |  | 3,832,826 | 4,235,215 |
Cash and other assets | 898,252 |  |  |  | 590,299 |  |  |  | 898,252 | 590,299 |
Total assets | 4,731,078 |  |  |  | 4,825,514 |  |  |  | 4,731,078 | 4,825,514 |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 18,812 | 10,889 | 12,013
Land and Development |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Income from sales of real estate |  |  |  |  |  |  |  |  | 15,963 | 26,333 | 32,834
Operating Segments | Real Estate Finance |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  | 106,548 | 129,153 | 134,687
Other income |  |  |  |  |  |  |  |  | 2,633 | 4,658 | 9,737
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain from discontinued operations |  |  |  |  |  |  |  |  | 0 |  |
Income from sales of real estate |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenue and other earnings |  |  |  |  |  |  |  |  | 109,181 | 133,811 | 144,424
Real estate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | (1,413) | (2,719) | (2,291)
Allocated interest expense |  |  |  |  |  |  |  |  | (40,359) | (57,787) | (57,109)
Allocated general and administrative |  |  |  |  |  |  |  |  | (15,223) | (15,311) | (13,128)
Segment profit (loss) |  |  |  |  |  |  |  |  | 52,186 | 57,994 | 71,896
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | (5,828) | (12,514) | 36,567
Impairment of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Capitalized expenditures |  |  |  |  |  |  |  |  | 0 | 0 | 0
Real estate, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Real estate available and held for sale | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Total real estate | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Land and development, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Loans receivable and other lending investments, net | 1,300,655 |  |  |  | 1,450,439 |  |  |  | 1,300,655 | 1,450,439 |
Other investments | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Total portfolio assets | 1,300,655 |  |  |  | 1,450,439 |  |  |  | 1,300,655 | 1,450,439 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Net Lease |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 123,685 | 126,164 | 132,968
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 2,603 | 1,632 | 350
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 5,086 | 3,567 | 5,221
Income from discontinued operations |  |  |  |  |  |  |  |  | 4,939 | 18,270 | 15,077
Gain from discontinued operations |  |  |  |  |  |  |  |  | 123,418 |  |
Income from sales of real estate |  |  |  |  |  |  |  |  | 87,512 | 21,138 | 40,082
Total revenue and other earnings |  |  |  |  |  |  |  |  | 347,243 | 170,771 | 193,698
Real estate expense |  |  |  |  |  |  |  |  | (16,742) | (18,158) | (21,614)
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Allocated interest expense |  |  |  |  |  |  |  |  | (53,710) | (65,880) | (66,504)
Allocated general and administrative |  |  |  |  |  |  |  |  | (19,563) | (17,585) | (15,569)
Segment profit (loss) |  |  |  |  |  |  |  |  | 257,228 | 69,148 | 90,011
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 5,486 | 4,829 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 28,132 | 31,380 | 34,936
Capitalized expenditures |  |  |  |  |  |  |  |  | 4,838 | 3,667 | 4,195
Real estate, net | 815,783 |  |  |  | 911,112 |  |  |  | 815,783 | 911,112 |
Real estate available and held for sale | 0 |  |  |  | 155,051 |  |  |  | 0 | 155,051 |
Total real estate | 815,783 |  |  |  | 1,066,163 |  |  |  | 815,783 | 1,066,163 |
Land and development, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 205,007 |  |  |  | 92,669 |  |  |  | 205,007 | 92,669 |
Total portfolio assets | 1,020,790 |  |  |  | 1,158,832 |  |  |  | 1,020,790 | 1,158,832 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Operating Properties |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 63,159 | 64,593 | 77,454
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 49,641 | 33,216 | 34,637
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | (772) | 33,863 | 1,663
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain from discontinued operations |  |  |  |  |  |  |  |  | 0 |  |
Income from sales of real estate |  |  |  |  |  |  |  |  | 4,537 | 75,357 | 53,734
Total revenue and other earnings |  |  |  |  |  |  |  |  | 116,565 | 207,029 | 167,488
Real estate expense |  |  |  |  |  |  |  |  | (89,725) | (82,401) | (95,888)
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Allocated interest expense |  |  |  |  |  |  |  |  | (20,171) | (23,156) | (28,014)
Allocated general and administrative |  |  |  |  |  |  |  |  | (8,075) | (6,574) | (6,988)
Segment profit (loss) |  |  |  |  |  |  |  |  | (1,406) | 94,898 | 36,598
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 6,358 | 5,855 | 5,935
Depreciation and amortization |  |  |  |  |  |  |  |  | 17,684 | 17,887 | 24,548
Capitalized expenditures |  |  |  |  |  |  |  |  | 35,754 | 56,784 | 84,103
Real estate, net | 466,248 |  |  |  | 476,162 |  |  |  | 466,248 | 476,162 |
Real estate available and held for sale | 68,588 |  |  |  | 82,480 |  |  |  | 68,588 | 82,480 |
Total real estate | 534,836 |  |  |  | 558,642 |  |  |  | 534,836 | 558,642 |
Land and development, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 38,761 |  |  |  | 3,583 |  |  |  | 38,761 | 3,583 |
Total portfolio assets | 573,597 |  |  |  | 562,225 |  |  |  | 573,597 | 562,225 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Land and Development |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 840 | 423 | 785
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 126,259 | 3,170 | 1,219
Land development revenue |  |  |  |  |  |  |  |  | 196,879 | 88,340 | 100,216
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 7,292 | 30,012 | 16,683
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain from discontinued operations |  |  |  |  |  |  |  |  | 0 |  |
Income from sales of real estate |  |  |  |  |  |  |  |  | 0 | 8,801 | 0
Total revenue and other earnings |  |  |  |  |  |  |  |  | 331,270 | 130,746 | 118,903
Real estate expense |  |  |  |  |  |  |  |  | (41,150) | (36,963) | (29,007)
Land development cost of sales |  |  |  |  |  |  |  |  | (180,916) | (62,007) | (67,382)
Other expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Allocated interest expense |  |  |  |  |  |  |  |  | (28,033) | (34,888) | (32,087)
Allocated general and administrative |  |  |  |  |  |  |  |  | (16,483) | (13,693) | (11,488)
Segment profit (loss) |  |  |  |  |  |  |  |  | 64,688 | (16,805) | (21,061)
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 20,535 | 3,800 | 4,589
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,896 | 1,296 | 1,422
Capitalized expenditures |  |  |  |  |  |  |  |  | 125,744 | 109,548 | 94,971
Real estate, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Real estate available and held for sale | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Total real estate | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Land and development, net | 860,311 |  |  |  | 945,565 |  |  |  | 860,311 | 945,565 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 63,855 |  |  |  | 84,804 |  |  |  | 63,855 | 84,804 |
Total portfolio assets | 924,166 |  |  |  | 1,030,369 |  |  |  | 924,166 | 1,030,369 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Corporate, Non-Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Income from discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain from discontinued operations |  |  |  |  |  |  |  |  | 0 |  |
Corporate/Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 6,955 | 3,838 | 3,981
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 1,409 | 9,907 | 8,586
Income from sales of real estate |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenue and other earnings |  |  |  |  |  |  |  |  | 8,364 | 13,745 | 12,567
Real estate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | (19,541) | (3,164) | (4,083)
Allocated interest expense |  |  |  |  |  |  |  |  | (52,413) | (39,687) | (40,925)
Allocated general and administrative |  |  |  |  |  |  |  |  | (20,726) | (19,975) | (22,091)
Segment profit (loss) |  |  |  |  |  |  |  |  | (84,316) | (49,081) | (54,532)
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,321 | 1,097 | 1,139
Capitalized expenditures |  |  |  |  |  |  |  |  | 0 | 0 | $ 0
Real estate, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Real estate available and held for sale | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Total real estate | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Land and development, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 13,618 |  |  |  | 33,350 |  |  |  | 13,618 | 33,350 |
Total portfolio assets | $ 13,618 |  |  |  | 33,350 |  |  |  | $ 13,618 | 33,350 |
Total assets |  |  |  |  |  |  |  |  |  |  |

X
- Definition Sum of all assets excluding the Company's Total Portfolio Assets. + References No definition available. + Details
Name: | star_CashAndOtherAssets
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the aggregate of the holding and operating costs related to real estate held for investment and the net costs related to other real estate owned. + References No definition available. + Details
Name: | star_CostOfRealEstateHeldForSaleAndOtherRealEstateOwned
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Costs of Land Sales + References No definition available. + Details
Name: | star_CostsofLandSales
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate total of expenses of managing and administering the affairs of the entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line, excluding stock-based compensation expense. + References No definition available. + Details
Name: | star_GeneralAndAdministrativeExpenseExcludingStockBasedCompensationExpense
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among myriad other features and characteristics. In addition, amount also includes total debt and equity financial instruments including: securities held-to-maturity and securities available-for-sale. + References No definition available. + Details
Name: | star_LoansAndOtherLendingInvestments
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The aggregate of Total real estate, loans receivable, net and Other investments. + References No definition available. + Details
Name: | star_PortfolioAssets
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of costs that were capitalized after acquisition, including property improvements and carrying costs (for example, real estate taxes and insurance), but excluding the initial purchase price. + References No definition available. + Details
Name: | star_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisition
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of investments in land and buildings held for sale, including real estate considered to be inventory of the entity. + References No definition available. + Details
Name: | star_RealEstateAvailableAndHeldForSale
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Real Estate Investment Property, Held for Use, Net + References No definition available. + Details
Name: | star_RealEstateInvestmentPropertyHeldForUseNet
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The sum of the Company's total revenue and other earnings related to the Company's business segments. + References No definition available. + Details
Name: | star_RevenueAndOtherEarnings
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of profit or loss during the period recognized by the reportable segment. + References No definition available. + Details
Name: | star_SegmentProfitLoss
Namespace Prefix: | star_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_AssetImpairmentCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5C -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721675-107760 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e957-107759 + Details
Name: | us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(12)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1012-107759 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721523-107759 Reference 5: 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(14)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e957-107759 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721525-107759 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 + Details
Name: | us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + 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(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest and fee income related to commercial loans including industrial and agricultural, real estate (commercial and residential, construction and development), trade financing, and lease financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_InterestAndFeeIncomeLoansCommercial
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_InterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities.. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_InventoryRealEstateLandAndLandDevelopmentCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Revenue from the sale of land in the reporting period. + 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=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_LandSales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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=77902458&loc=d3e39896-112707 + Details
Name: | us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expense classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.7) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4,6) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_OtherExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of revenue and income classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
Name: | us-gaap_OtherIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related to loss from loan transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_ProvisionForLoanLossesExpensed
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=star_LandandDevelopmentSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=star_RealEstateLendingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=star_NetLeasingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=star_OperatingPropertyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=star_CorporateReconcilingItemsAndEliminationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |