CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013
Current assets
Cash and cash equivalents	$ 1,372	$ 1,024
Restricted cash	2,432
Accounts receivable	4	6
Related party receivable	25	25
Other current assets	1,066	1,165
Total current assets	4,899	2,220
Noncurrent assets
Land	399	380
Mineral properties	41,922	39,994
Equipment (net of accumulated depreciation of $184 and $132, respectively)	569	613
Deferred fees (Note 6)	7,751	7,751
Other long-term assets	219	104
Total noncurrent assets	50,860	48,842
Total assets	55,759	51,062
Current Liabilities
Accounts payable	2,265	2,849
Accrued liabilities	3,125	11,758
Buffalo liability (Note 8)	9,200
Grandhaven option	4,060	4,060
Current portion of long-term debt, (net of unamortized discount of $2,601 and nil, respectively)	2,899	122,032
Tax gross-up on note payable (Note 9)	1,164	6,226
Derivative warrant liabilities (Note 13)	4,505
Total current liabilities	27,218	146,925
Noncurrent liabilities
Tax gross-up on note payable (Note 9)	16,465
Noncurrent portion of long-term debt, (net of unamortized discount of $30,278 and nil, respectively)	91,304
Interest payable	10,001
Other long-term liabilities	100
Total noncurrent liabilities	117,870
Total liabilities	145,088	146,925
Commitments and Contingencies (Note 15)
SHAREHOLDERS' DEFICIT
Preferred stock: $0.001 par value; 100,000,000 shares authorized; none outstanding
Common stock: $0.001 par value; 300,000,000 shares authorized; 115,119,415 and 72,595,718 issued and outstanding at June 30, 2013 and March 31, 2013, respectively	115	73
Additional paid-in capital	40,599	35,641
Losses accumulated in the development stage	(130,043)	(131,577)
Total shareholders' deficit	(89,329)	(95,863)
Total liabilities and shareholders' deficit	$ 55,759	$ 51,062