Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Three months ended						Nine months ended
	September 30, 2015			September 30, 2014			September 30, 2015			September 30, 2014
Supplemental disclosures:	(in thousands)
Income taxes paid	$	6,321		$	7,864		$	17,167		$	18,397
Non-cash investing and financing activities:
Non-cash capital expenditures	(17		)	(149		)	(190		)	115