Other Liabilities

3 Months Ended

Mar. 31, 2018

Other Liabilities

Other Liabilities

(11) Other Liabilities

The Company’s other liabilities consisted of the following:

	March 31, 2018		December 31, 2017
	(In thousands)
Current portion of other long-term liabilities
Interest rate swap contracts	$	2,596	$	7,314
Asset retirement obligations		6,342		9,837
Deferred revenue		3,667		3,590
Other		10,272		10,629
Total current portion of other long-term liabilities	$	22,877	$	31,370
Noncurrent portion of other long-term liabilities
Acquisition-related contingent consideration	$	45,505	$	42,614
Interest rate swap contracts		—		3,547
Deferred revenue		1,961		2,063
Other		23,455		26,778
Total noncurrent portion of other long-term liabilities	$	70,921	$	75,002

As of March 31, 2018, the Acquisition-related contingent consideration line item consisted of the estimated fair value of the contingent consideration associated with the Spark acquisition.