The following table provides the components of the Company's interest and other income during the years ended December 31, 2013, 2012 and 2011:



	Year Ended December 31,
	2013			2012			2011
	(in thousands)
Other income	$	8,282		$	5,382		$	9,125
Equity interest in income of EFS Midstream	7,266			2,183			1,925
Deferred compensation plan income	5,954			1,872			1,657
Interest income	321			1,465			697
Income (loss) from vertical integration services (a)	(4,862		)	(11,934		)	15,978
Total interest and other income	$	16,961		$	(1,032	)	$	29,382

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(a)

Income (loss) from vertical integration services represent net margins that result from Company-provided fracture stimulation, drilling and related service operations, which are ancillary to and supportive of the Company's oil and gas joint operating activities, and do not represent intercompany transactions. For the three years ended December 31, 2013, 2012 and 2011, these net margins include $284.9 million, $247.8 million and $50.9 million of gross vertical integration revenues, respectively and $289.8 million, $259.7 million and $34.9 million of total vertical integration costs and expenses, respectively.