Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2014

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Three months ended						Nine months ended
	September 30, 2014			September 30, 2013			September 30, 2014		September 30, 2013
Supplemental disclosures:	(in thousands)
Interest paid	$	—		$	1		$	—	$	1
Income taxes paid	$	7,864		$	8,915		18,397		15,004
Non-cash investing and financing activities:
Non-cash capital expenditures	(149		)	(265		)	115		25