Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-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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- 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.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ 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)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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-Subparagraph (SX 210.9-03(16))
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- Definition

The net cash inflow or cash outflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 9
-Subparagraph c
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- Details

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- Details

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Debt - Unsecured Lines of Credit (Details) - USD ($)	12 Months Ended
Debt - Unsecured Lines of Credit (Details) - USD ($)	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Unsecured line of credit	$ 0		$ 20,800,000
Total indebtedness	1,488,718,000		1,358,606,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total indebtedness	9,900,000		15,500,000
Line of Credit [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Unsecured line of credit	203,000,000		182,300,000
Line of Credit [Member] \| Unsecured Debt [Member] \| Unsecured Line [Member]
Debt Instrument [Line Items]
Proceeds from (repayments of) lines of credit	20,800,000
Line of Credit [Member] \| Term Loan [Member] \| Fund II Line [Member]
Debt Instrument [Line Items]
Unsecured line of credit			$ 12,500,000
Total indebtedness	25,500,000
Revolving Credit Facility [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Unsecured line of credit	$ 0
Revolving Credit Facility [Member] \| Unsecured Debt [Member] \| Unsecured Term Loan Maturing June 27, 2021 [Member]
Debt Instrument [Line Items]
Borrowings, amount		$ 150,000,000
London Interbank Offered Rate (LIBOR) [Member] \| Revolving Credit Facility [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.40%