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Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value Measurements [Table Text Block]



					Fair Value Measurement at
					September 30, 2016
	Total				Level 1				Level 2				Level 3
Assets:
Deferred compensation trust assets ⁽¹⁾	$	25,010			$	—			$	25,010			$	—
Liabilities:
Deferred compensation plan	$	31,018			$	—			$	31,018			$	—
5 year interest rate swap	651				—				651				—
10 year interest rate swap	2,521				—				2,521				—
	$	34,190			$	—			$	34,190			$	—



					Fair Value Measurement at
					December 31, 2015
	Total				Level 1				Level 2				Level 3
Assets:
Deferred compensation trust assets ⁽¹⁾	$	23,737			$	—			$	23,737			$	—
Liabilities:
Deferred compensation plan	$	29,155			$	—			$	29,155			$	—
5 year interest rate swap	353				—				353				—
10 year interest rate swap	1,229				—				1,229				—
	$	30,737			$	—			$	30,737			$	—

(1) Trust assets consist of the cash surrender value of life insurance policies intended to assist in the funding of the deferred compensation plan and are included in Other assets in the Balance Sheet.