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Segment Reporting (Schedule of Segments) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) segments | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments | segments |  |  |  |  |  |  |  |  | 4 |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | $ 191,180 | $ 211,207 | $ 229,672
Interest income |  |  |  |  |  |  |  |  | 129,153 | 134,687 | 122,704
Other income |  |  |  |  |  |  |  |  | 46,514 | 49,924 | 77,583
Land development revenue |  |  |  |  |  |  |  |  | 88,340 | 100,216 | 15,191
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 77,349 | 32,153 | 94,905
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax | $ 7,336 | $ 3,721 | $ 3,633 | $ 3,580 | $ 6,186 | $ 3,483 | $ 3,374 | $ 2,034 | 18,270 | 15,077 | 13,122
Income from sales of real estate |  |  |  |  |  |  |  |  | 105,296 | 93,816 | 89,943
Total revenue and other earnings |  |  |  |  |  |  |  |  | 656,102 | 637,080 | 643,120
Real estate expense |  |  |  |  |  |  |  |  | (137,522) | (146,509) | (162,829)
Land development cost of sales |  |  |  |  |  |  |  |  | (62,007) | (67,382) | (12,840)
Other expense |  |  |  |  |  |  |  |  | (5,883) | (6,374) | (6,340)
Allocated interest expense |  |  |  |  |  |  |  |  | (221,398) | (224,639) | (224,483)
Allocated general and administrative |  |  |  |  |  |  |  |  | (73,138) | (69,264) | (74,973)
Segment profit (loss) |  |  |  |  |  |  |  |  | 156,154 | 122,912 | 161,655
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | (12,514) | 36,567 | (1,714)
Impairment of assets |  |  |  |  |  |  |  |  | 14,484 | 10,524 | 34,634
Depreciation and amortization |  |  |  |  |  |  |  |  | 51,660 | 62,045 | 70,375
Capitalized expenditures |  |  |  |  |  |  |  |  | 169,999 | 183,269 | 145,238
Real estate, net | 1,387,274 |  |  |  | 1,490,775 |  |  |  | 1,387,274 | 1,490,775 |
Real estate available and held for sale | 237,531 |  |  |  | 286,115 |  |  |  | 237,531 | 286,115 |
Total real estate | 1,624,805 |  |  |  | 1,776,890 |  |  |  | 1,624,805 | 1,776,890 |
Land and development, net | 945,565 |  |  |  | 1,001,963 |  |  |  | 945,565 | 1,001,963 |
Loans receivable and other lending investments, net | 1,450,439 |  |  |  | 1,601,985 |  |  |  | 1,450,439 | 1,601,985 |
Other investments | 214,406 |  |  |  | 254,172 |  |  |  | 214,406 | 254,172 |
Total portfolio assets | 4,235,215 |  |  |  | 4,635,010 |  |  |  | 4,235,215 | 4,635,010 |
Cash and other assets | 590,299 |  |  |  | 962,782 |  |  |  | 590,299 | 962,782 |
Total assets | 4,825,514 |  |  |  | 5,597,792 |  |  |  | 4,825,514 | 5,597,792 |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 10,889 | 12,013 | 13,314
Land and Development |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Income from sales of real estate |  |  |  |  |  |  |  |  | 26,333 | 32,834 | 2,351
Operating Segments | Real Estate Finance |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  | 129,153 | 134,687 | 122,704
Other income |  |  |  |  |  |  |  |  | 4,658 | 9,737 | 21,217
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 0 | 0 | 0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from sales of real estate |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenue and other earnings |  |  |  |  |  |  |  |  | 133,811 | 144,424 | 143,921
Real estate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | (2,719) | (2,291) | (243)
Allocated interest expense |  |  |  |  |  |  |  |  | (57,787) | (57,109) | (58,043)
Allocated general and administrative |  |  |  |  |  |  |  |  | (15,311) | (13,128) | (13,211)
Segment profit (loss) |  |  |  |  |  |  |  |  | 57,994 | 71,896 | 72,424
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | (12,514) | 36,567 | (1,714)
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 | 1,450,439 |  |  |  | 1,601,985 |  |  |  | 1,450,439 | 1,601,985 |
Other investments | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Total portfolio assets | 1,450,439 |  |  |  | 1,601,985 |  |  |  | 1,450,439 | 1,601,985 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Net Lease |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 126,164 | 132,968 | 138,506
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 1,632 | 350 | 987
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 3,567 | 5,221 | 3,260
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 18,270 | 15,077 | 13,122
Income from sales of real estate |  |  |  |  |  |  |  |  | 21,138 | 40,082 | 6,206
Total revenue and other earnings |  |  |  |  |  |  |  |  | 170,771 | 193,698 | 162,081
Real estate expense |  |  |  |  |  |  |  |  | (18,158) | (21,614) | (22,407)
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Allocated interest expense |  |  |  |  |  |  |  |  | (65,880) | (66,504) | (72,089)
Allocated general and administrative |  |  |  |  |  |  |  |  | (17,585) | (15,569) | (16,603)
Segment profit (loss) |  |  |  |  |  |  |  |  | 69,148 | 90,011 | 50,982
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 4,829 | 0 | 3,689
Depreciation and amortization |  |  |  |  |  |  |  |  | 31,380 | 34,936 | 35,645
Capitalized expenditures |  |  |  |  |  |  |  |  | 3,667 | 4,195 | 3,933
Real estate, net | 911,112 |  |  |  | 1,009,271 |  |  |  | 911,112 | 1,009,271 |
Real estate available and held for sale | 155,051 |  |  |  | 148,841 |  |  |  | 155,051 | 148,841 |
Total real estate | 1,066,163 |  |  |  | 1,158,112 |  |  |  | 1,066,163 | 1,158,112 |
Land and development, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 92,669 |  |  |  | 69,096 |  |  |  | 92,669 | 69,096 |
Total portfolio assets | 1,158,832 |  |  |  | 1,227,208 |  |  |  | 1,158,832 | 1,227,208 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Operating Properties |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 64,593 | 77,454 | 90,331
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 33,216 | 34,637 | 42,000
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 33,863 | 1,663 | 1,669
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from sales of real estate |  |  |  |  |  |  |  |  | 75,357 | 53,734 | 83,737
Total revenue and other earnings |  |  |  |  |  |  |  |  | 207,029 | 167,488 | 217,737
Real estate expense |  |  |  |  |  |  |  |  | (82,401) | (95,888) | (113,504)
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Allocated interest expense |  |  |  |  |  |  |  |  | (23,156) | (28,014) | (39,535)
Allocated general and administrative |  |  |  |  |  |  |  |  | (6,574) | (6,988) | (9,608)
Segment profit (loss) |  |  |  |  |  |  |  |  | 94,898 | 36,598 | 55,090
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 5,855 | 5,935 | 8,131
Depreciation and amortization |  |  |  |  |  |  |  |  | 17,887 | 24,548 | 32,142
Capitalized expenditures |  |  |  |  |  |  |  |  | 56,784 | 84,103 | 61,186
Real estate, net | 476,162 |  |  |  | 481,504 |  |  |  | 476,162 | 481,504 |
Real estate available and held for sale | 82,480 |  |  |  | 137,274 |  |  |  | 82,480 | 137,274 |
Total real estate | 558,642 |  |  |  | 618,778 |  |  |  | 558,642 | 618,778 |
Land and development, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 3,583 |  |  |  | 11,124 |  |  |  | 3,583 | 11,124 |
Total portfolio assets | 562,225 |  |  |  | 629,902 |  |  |  | 562,225 | 629,902 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Operating Segments | Land and Development |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 423 | 785 | 835
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 3,170 | 1,219 | 3,327
Land development revenue |  |  |  |  |  |  |  |  | 88,340 | 100,216 | 15,191
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 30,012 | 16,683 | 14,966
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from sales of real estate |  |  |  |  |  |  |  |  | 8,801 | 0 | 0
Total revenue and other earnings |  |  |  |  |  |  |  |  | 130,746 | 118,903 | 34,319
Real estate expense |  |  |  |  |  |  |  |  | (36,963) | (29,007) | (26,918)
Land development cost of sales |  |  |  |  |  |  |  |  | (62,007) | (67,382) | (12,840)
Other expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Allocated interest expense |  |  |  |  |  |  |  |  | (34,888) | (32,087) | (29,432)
Allocated general and administrative |  |  |  |  |  |  |  |  | (13,693) | (11,488) | (13,062)
Segment profit (loss) |  |  |  |  |  |  |  |  | (16,805) | (21,061) | (47,933)
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 3,800 | 4,589 | 22,814
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,296 | 1,422 | 1,440
Capitalized expenditures |  |  |  |  |  |  |  |  | 109,548 | 94,971 | 80,119
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 | 945,565 |  |  |  | 1,001,963 |  |  |  | 945,565 | 1,001,963 |
Loans receivable and other lending investments, net | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Other investments | 84,804 |  |  |  | 100,419 |  |  |  | 84,804 | 100,419 |
Total portfolio assets | 1,030,369 |  |  |  | 1,102,382 |  |  |  | 1,030,369 | 1,102,382 |
Total assets |  |  |  |  |  |  |  |  |  |  |
Corporate, Non-Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Corporate/Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting |  |  |  |  |  |  |  |  |  |  |
Operating lease income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income |  |  |  |  |  |  |  |  | 3,838 | 3,981 | 10,052
Land development revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Earnings (loss) from equity method investments |  |  |  |  |  |  |  |  | 9,907 | 8,586 | 75,010
Income from sales of real estate |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenue and other earnings |  |  |  |  |  |  |  |  | 13,745 | 12,567 | 85,062
Real estate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Land development cost of sales |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other expense |  |  |  |  |  |  |  |  | (3,164) | (4,083) | (6,097)
Allocated interest expense |  |  |  |  |  |  |  |  | (39,687) | (40,925) | (25,384)
Allocated general and administrative |  |  |  |  |  |  |  |  | (19,975) | (22,091) | (22,489)
Segment profit (loss) |  |  |  |  |  |  |  |  | (49,081) | (54,532) | 31,092
(Recovery of) provision for loan losses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Impairment of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,097 | 1,139 | 1,148
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 | 33,350 |  |  |  | 73,533 |  |  |  | 33,350 | 73,533 |
Total portfolio assets | $ 33,350 |  |  |  | 73,533 |  |  |  | $ 33,350 | 73,533 |
Total assets |  |  |  |  |  |  |  |  |  |  |

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- 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
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- 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
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- 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
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