Supplemental Cash Flow Information and Non-Cash Activity

3 Months Ended

Mar. 31, 2017

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information and Non-cash Activity

The following table is a summary of cash paid for Interest and Income taxes and non-cash items from investing and financing activities (in thousands):



	Three Months Ended March 31,
	2017		2016
Cash paid during the period for:
Interest	$	206	$	154
Income taxes (refunds)	819		(762		)
Non-cash items from investing and financing activities:
Investment in multi-client data library financed through accounts payable	1,654		3,885
Purchases of property, plant, and equipment financed through accounts payable	730		179