Debt Instrument, Accordion Feature, Increase Limit, Minimum Advance

No definition available.

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- Definition

Debt Instrument, Accordion Feature, Number of Advances, Maximum

+ References

No definition available.

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- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

+ References

No definition available.

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- Definition

Amount of assets pledged to secure a debt instrument.

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- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

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-Name Accounting Standards Codification
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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.

+ Details

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

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-Name Accounting Standards Codification
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Indicates the number of mortgages under each classification.

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-Topic 948
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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

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Debt - 2017 Activity (Details)							3 Months Ended		9 Months Ended		12 Months Ended
Debt - 2017 Activity (Details)	Sep. 30, 2017 USD ($)	Aug. 01, 2017 Mortgage_Notes	Jul. 28, 2017 USD ($)	May 30, 2017 USD ($)	Mar. 03, 2017 USD ($)	Mar. 01, 2017 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) advance	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Unused borrowing capacity	$ 349,100,000						$ 349,100,000		$ 349,100,000
Amortization of deferred financing fees							546,000	$ 428,000	1,553,000	$ 1,208,000
Net book value of properties that are collateral for debt arrangements	91,400,000						91,400,000		91,400,000		$ 229,900,000
Accounts Payable, Accrued Expenses and Other Liabilities
Debt Instrument [Line Items]
Interest payable	$ 5,300,000						5,300,000		$ 5,300,000		$ 5,700,000
Wells Fargo, National Association Due August 1, 2017 \| Yorkville, WI, Q4 2014 [Member] \| Secured Debt
Debt Instrument [Line Items]
Repayments of Debt				$ 1
$150 Million Unsecured Term Loan D [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Unused borrowing capacity			$ 150,000,000
Line of Credit Facility, Accordion Feature, Increase Limit			250,000,000
Debt Instrument, Accordion Feature, Number of Advances, Maximum \| advance									6
Debt Instrument, Accordion Feature, Increase Limit, Minimum Advance									$ 25,000,000
Debt Issuance Costs, Gross			1,000,000
Debt Instrument, Fee Amount			$ 35,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.15%
Connecticut General Life Insurance Company Facilities \| Secured Debt
Debt Instrument [Line Items]
Mortgage Loans on Real Estate, Number of Loans \| Mortgage_Notes		3
Webster Bank, National Association due May 31, 2017 \| East Windsor, Q4, 2016 [Member] \| Secured Debt
Debt Instrument [Line Items]
Repayments of Debt					$ 1
Webster Bank, National Association due May 29, 2017 \| Portland, ME, Q1 2012, 1 [Member] \| Secured Debt
Debt Instrument [Line Items]
Repayments of Debt						$ 1
Union Fidelity Life Insurance Co Due April 30, 2017 \| Hazelwood, MO, Q3 2011 [Member] \| Secured Debt
Debt Instrument [Line Items]
Repayments of Debt						$ 1
LIBOR \| $150 Million Unsecured Term Loan D [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate margin (as a percent)	1.30%										0.00%
$450 Million Wells Fargo Unsecured Credit Facility \| Line of Credit \| Unsecured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 450,000,000						450,000,000		450,000,000
$450 Million Wells Fargo Unsecured Credit Facility \| Interest Expense [Member] \| Line of Credit \| Unsecured Debt
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Amount							$ 286,000	$ 347,000	$ 839,000	$ 1,035,000
$450 Million Wells Fargo Unsecured Credit Facility \| LIBOR \| Line of Credit \| Unsecured Debt
Debt Instrument [Line Items]
Interest rate margin (as a percent)									1.15%		1.15%