Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Three months ended
	March 31, 2015			March 31, 2014
Supplemental disclosures:	(in thousands)
Interest paid	$	—		$	—
Income taxes paid	$	4,203		$	683
Non-cash investing and financing activities:
Non-cash capital expenditures	(71		)	2