CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 124,305	$ 89,210
Restricted cash	749	749
Trade accounts receivable	64,780	112,968
Inventories	185,074	243,853
Prepaid and other current assets	15,609	14,009
Total current assets	390,517	460,789
Property and equipment
Property, plant and equipment	127,794	123,323
Proved oil and gas properties, at cost, successful efforts method of accounting	1,122	1,122
Total property and equipment	128,916	124,445
Less accumulated depreciation, depletion and amortization	(14,109)	(11,510)
Property and equipment, net	114,807	112,935
Long-term assets
Investment in Piceance Energy, LLC	116,595	104,657
Intangible assets, net	6,893	7,506
Goodwill	20,786	20,786
Other long-term assets	37,991	34,334
Total assets	687,589	741,007
Current liabilities
Current maturities of long-term debt	40,485	29,100
Obligations under supply and exchange agreements	181,899	197,394
Accounts payable	21,891	33,064
Other accrued liabilities	36,539	51,248
Total current liabilities	280,814	310,806
Long-term liabilities
Long-term debt, net of current maturities and unamortized discount	72,014	107,510
Common stock warrants	17,145	12,123
Contingent consideration	14,060	9,131
Contingent consideration	1,234	1,295
Other liabilities	8,257	7,983
Total liabilities	393,524	448,848
Commitments and contingencies (Note 9)
Stockholders’ equity
Preferred stock, $0.01 par value: 3,000,000 shares authorized, none issued	0	0
Common stock, $0.01 par value; 500,000,000 shares authorized at March 31, 2015 and December 31, 2014, 37,135,512 shares and 37,068,886 shares issued at March 31, 2015 and December 31, 2014, respectively	371	371
Additional paid-in capital	428,732	427,287
Accumulated other comprehensive loss	(134,592)	(135,053)
Accumulated deficit	(446)	(446)
Total stockholders’ equity	294,065	292,159
Total liabilities and stockholders’ equity	$ 687,589	$ 741,007