Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Three months ended					Six months ended
	June 30, 2015			June 30, 2014		June 30, 2015			June 30, 2014
Supplemental disclosures:	(in thousands)
Interest paid	$	—		$	—	$	—		$	—
Income taxes paid	$	6,643		$	9,850	10,846			10,533
Non-cash investing and financing activities:
Non-cash capital expenditures	(102		)	262		(173		)	264
Dividends declared	5,982			4,779		5,982			4,779