Supplemental disclosure of cash flow information follows (in thousands):



	Years Ended December 31,
	2016			2015			2014
Cash paid during the period for:
Interest	$	15,691		$	15,441		$	16,582
Income taxes	4,474			8,163			16,124
Non-cash items from investing and financing activities:
Purchase of computer equipment financed through capital leases	—			1,178			12,153
Leasehold improvement paid by landlord	955			—			—
Conversion of the Company's investment in a convertible note to equity	—			—			3,151
Issuance of stock in bond exchange	10,741			—			—
Transfer of inventory to property, plant and equipment	17,662		(a)	15,936		(b)	10,149
Investment in multi-client data library financed through trade payables	—			8,939			—
Purchases of property, plant, and equipment and seismic rental equipment financed through accounts payable	—			—			472


^(a)	This transfer of $17.7 million of inventory to property, plant, equipment and seismic rental equipment in December 2016, relates to ocean bottom seismic equipment manufactured by the Company to be deployed in the acquisition of ocean bottom seismic data.

^(b)

This transfer of inventory to property, plant, equipment and seismic rental equipment relates to ocean bottom seismic equipment manufactured by the Company to be deployed in the acquisition of ocean bottom seismic data. During the twelve months ended December 31, 2015, the Company purchased approximately $19.2 million of property, plant, equipment and seismic rental equipment, including approximately $15.3 million related to the manufacture of ocean bottom seismic equipment that will be used by the Ocean Bottom Services segment.