Assets Pledged As Collateral

No definition available.

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- Definition

Business Dispositions, Number of Entities Sold

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No definition available.

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- Definition

Debt Instrument, Covenant Compliance, Total Debt to Adjusted EBITDA

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- Definition

Debt Instrument, Covenant Compliance, Total Debt to EBITDA

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No definition available.

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- Definition

Lease Term

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- Definition

Line of Credit Facility, Additional Borrowing Capacity

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No definition available.

+ Details

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- Definition

Line of Credit Facility, Incremental Increase To Borrowing Capacity

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No definition available.

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- Definition

Number Of Capital Leases

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No definition available.

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- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

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

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No definition available.

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- Definition

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

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Amount of the required periodic payments including both interest and principal payments.

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- Definition

Amount of the required periodic payments applied to principal.

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- References

No definition available.

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- Definition

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

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- Definition

Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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- Definition

Term of lessee's finance lease renewal for lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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-SubTopic 20
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-Paragraph 3
-Subparagraph (b)
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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.

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- Definition

Amount of increase (decrease) of the credit facility.

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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.

+ References

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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

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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- Definition

Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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- Definition

The yearly payments due under the lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

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- Definition

The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.

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- Definition

The financing cost related to leases that have been recorded under the deposit method, as a financing or as a capital leases in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

No definition available.

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

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Indebtedness - Narrative (Details)			1 Months Ended	2 Months Ended	12 Months Ended
Indebtedness - Narrative (Details)	Oct. 23, 2018 USD ($)	Apr. 14, 2014 USD ($)	Jan. 31, 2018 USD ($)	Nov. 30, 2004 USD ($) Property	Dec. 31, 2018 USD ($) lease	Oct. 22, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jul. 05, 2011 USD ($)	Dec. 31, 2002 USD ($) Property
Debt Instruments [Abstract]
Debt					$ 424,752,000		$ 368,798,000
Less: Current Maturities					83,778,000		97,192,000
Long-Term Debt					340,974,000		271,606,000
Unamortized debt issuance expense					$ 1,400,000		1,500,000
Lease term (in years)					15 years
Sale leaseback transaction, deferred gain, net					$ 0
DAMI Credit Facility \| LIBOR \| Revolving Credit Agreement
Debt Instruments [Abstract]
Interest rate basis spread (percentage)					3.78%
Revolving Facility
Debt Instruments [Abstract]
Debt covenant, total debt to EBITDA (no greater than)					2.5
Debt covenant, total debt to Adjusted EBITDA (no greater than)					3.00
Line of Credit
Debt Instruments [Abstract]
Incremental increase to borrowing capacity					$ (16,000,000)
Decrease in credit amount outstanding					11,000,000
Line of Credit \| Revolving Credit Agreement
Debt Instruments [Abstract]
Debt issuance costs, net					2,600,000		3,200,000
Maximum borrowing capacity	$ 400,000,000
Line of Credit \| LIBOR \| Minimum
Debt Instruments [Abstract]
Interest rate basis spread (percentage)	1.25%
Line of Credit \| LIBOR \| Maximum
Debt Instruments [Abstract]
Interest rate basis spread (percentage)	2.25%
Line of Credit \| Prime Rate \| Minimum
Debt Instruments [Abstract]
Interest rate basis spread (percentage)	0.25%
Line of Credit \| Base Rate \| Maximum
Debt Instruments [Abstract]
Interest rate basis spread (percentage)	1.25%
Line of Credit \| Revolving Facility \| Revolving Credit Agreement
Debt Instruments [Abstract]
Debt					16,000,000		0
Line of credit, additional borrowing capacity (up to)					250,000,000
Line of credit amount outstanding					$ 373,000,000
Line of Credit \| Revolving Facility \| Revolving Credit Agreement \| Minimum
Debt Instruments [Abstract]
Commitment fee for unused balance amount (percentage)					0.15%
Line of Credit \| Revolving Facility \| Revolving Credit Agreement \| Maximum
Debt Instruments [Abstract]
Commitment fee for unused balance amount (percentage)					0.30%
Senior Unsecured Notes Issued July Twenty Eleven [Member]
Debt Instruments [Abstract]
Notes issued								$ 125,000,000
Debt interest rate (percentage)		3.95%
Annual principal repayment amount								$ 25,000,000
Unsecured Debt \| Term Loan
Debt Instruments [Abstract]
Debt						$ 87,500,000
Maximum borrowing capacity	$ 225,000,000
Installment payments required	$ 5,625,000
Senior Notes \| Senior Unsecured Notes, 3.95%, Due in Installments through April 2018
Debt Instruments [Abstract]
Debt					$ 0		24,994,000
Debt interest rate (percentage)					3.95%
Senior Notes \| Senior Unsecured Notes, 4.75%, Due in Installments through April 2021
Debt Instruments [Abstract]
Debt					$ 179,750,000		239,784,000
Notes issued		$ 300,000,000.0
Debt interest rate (percentage)		4.75%			4.75%
Periodic payment, principal		$ 60,000,000.0
Term Loan
Debt Instruments [Abstract]
Debt					$ 223,837,000		96,272,000
Related Party
Debt Instruments [Abstract]
Number of capital leases with a limited liability company \| lease					3
Properties sold \| Property				11					10
Borrowings collateralized by the land and buildings				$ 6,800,000					$ 5,000,000
Lease term (in years)				15 years
Aggregate annual rental			$ 300,000	$ 200,000
Interest implicit in the leases (percentage)				9.70%
Related Party \| Minimum
Debt Instruments [Abstract]
Lease term (in years)			5 years
Related Party \| Maximum
Debt Instruments [Abstract]
Lease term (in years)			8 years
Related Party \| Revolving Facility
Debt Instruments [Abstract]
Lease renewal term					5 years
Capital Lease Obligations, Related Party
Debt Instruments [Abstract]
Debt					$ 123,000		1,314,000
Capital Lease Obligations
Debt Instruments [Abstract]
Debt					5,042,000		$ 6,434,000
Lender Fees \| Line of Credit
Debt Instruments [Abstract]
Debt Issuance Costs, Line of Credit Arrangements, Gross					400,000
Third Party Legal and Administrative Fees \| Line of Credit
Debt Instruments [Abstract]
Debt Issuance Costs, Line of Credit Arrangements, Gross					$ 100,000