CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities
Net loss	$ (4,639)	$ (8,033)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation, depletion and amortization	4,531	4,926
Asset retirement obligation accretion	440	541
Stock-based compensation	507	338
Acquisition adjustments	(9,855)	1,591
Other		1
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	(3,042)	(348)
(Increase) decrease in inventories	(2,098)	(1,422)
(Increase) decrease in other current assets	(6,175)	39
Increase (decrease) in accounts payable and accrued liabilities	7,388	1,245
Net cash used in operating activities	(12,943)	(1,122)
Cash flows from investing activities
Capital expenditures	(2,050)	(352)
Acquisition - related party	(85,000)
Net cash used in investing activities	(87,050)	(352)
Cash flows from financing activities
Proceeds from issuance of common stock	135,000
Proceeds from note payable - related party	650
Proceeds from exercise of stock options	415
Net cash provided by financing activities	136,065
Net increase (decrease) in cash and cash equivalents	36,072	(1,474)
Cash and cash equivalents at beginning of period	163	3,806
Cash and cash equivalents at end of period	36,235	2,332
Cash paid for:
Interest, net	$ 8	$ 4