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Summary of Significant Accounting Policies (Supplemental Consolidated Statements of Cash Flows Information) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Supplemental disclosure of cash activities:
Cash paid for interest	$ 11,693,000	$ 10,933,000
Supplemental disclosure of non-cash activities:
Capitalization of interest and financing costs	702,000	$ 727,000
Recognition of right-of-use assets and related lease liabilities	$ 14,205,000

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Right of use assets and related lease liabilities.

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Amount of interest capitalized during the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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