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Supplemental Balance Sheet Information

6 Months Ended

Jun. 30, 2017

Components of "Other assets, net" were as follows:



	June 30, 2017		December 31, 2016
Customer contracts and relationships, net	$	30,881	$	36,528
Other intangible assets	2,011		2,280
Other	5,899		6,066
	$	38,791	$	44,874

Accumulated amortization of intangible assets was $56,082 and $48,876 at June 30, 2017 and December 31, 2016, respectively.

Components of "Other accrued liabilities" were as follows:



	June 30, 2017		December 31, 2016
Accrued interest	$	10,354	$	10,629
Asset retirement obligations	9,042		7,953
Property and other taxes payable	5,812		6,443
Accrued payroll	1,475		1,672
Other	6		20
	$	26,689	$	26,717