Real Estate Real Estate (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Real Estate [Abstract]
Properties in operation	$ 448,422,000	$ 457,237,000
Properties under development	789,316,000	727,744,000
Total	1,237,738,000	1,184,981,000
Real Estate Investment Property, Accumulated Depreciation	$ 16,654,000	$ 14,996,000

The current amount of expenditures for a real estate project that has not yet been completed.

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 210.7-03.10)
-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
-Glossary Phase
-URI http://asc.fasb.org/extlink&oid=49177889

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- References

No definition available.

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- Definition

The cumulative amount of depreciation for real estate property held for investment purposes.

+ References

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- 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

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- Definition

Building and Lease Obligations

+ References

No definition available.

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