Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2016

Supplemental Cash Flow Elements [Abstract]

Components of supplemental cash flow information

Supplemental cash flow information is as follows (in thousands):

	Six months ended June 30,
	2016		2015
Supplemental non-cash investing and financing activities:
Value of common stock issued in acquisitions	$	—	$	1,014
Exercise of stock options by common stock surrender	—		1,126
Supplemental cash payment information:
Interest paid	$	921	$	641
Income taxes paid, net of refunds	3,429		2,549