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Debt Obligations - Consolidated Debt Obligations Outstanding (Parenthetical) (Details) - One Commerce Square [Member] - Secured Debt [Member] - USD ($) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Dec. 29, 2015 | Mar. 31, 2017 | Dec. 31, 2015
Debt Instrument [Line Items] |  |  |  |
Debt instrument increase in principal | $ 130.0 |  |  |
Debt instrument maturity date |  | Apr. 05, 2023 |  |
Effective interest rate |  | 3.64% | [1] | 3.64%
[1] | This loan was assumed upon acquisition of the related properties on December 19, 2013. On December 29, 2015, the Company refinanced the debt increasing the principal balance to $130.0 million and extended the term of the scheduled maturity from January 6, 2016 to April 5, 2023. The effective interest rate as of December 31, 2015 was 3.64%. A default under this loan will also constitute a default under the loan outstanding on Two Commerce Square. This loan is also secured by a lien on Two Commerce Square.

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + 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 210.5-02.22(a)(1)) -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 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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