Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Cash Flow Information

Schedule of supplemental cash flow information

	For the Year Ended December 31,
	2014		2013		2012
Cash paid during the year:
Income taxes paid, net of refunds	$	—	$	—	$	—
Interest paid, net of amounts capitalized		14,667		18,094		21,966
Non-cash investing activities—capital assets acquired under installment contracts		6,005		—		—