|
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)
In Thousands, except Share data, unless otherwise specified
|
Total
|
Common Stock
|
Accumulated Other Comprehensive (Loss) Income
|
Accumulated Deficit
|
| Balance at Dec. 31, 2010 |
$ 173,280 |
$ 504,389 |
$ 257 |
$ (331,366) |
| Balance (in shares) at Dec. 31, 2010 |
|
122,186,000 |
|
|
| Increase (Decrease) in Shareholders' Equity |
|
|
|
|
| Stock-based compensation |
2,671 |
2,671 |
|
|
| Sale of shares for cash, net of issuance costs |
105,415 |
105,415 |
|
|
| Sale of shares for cash, net of issuance costs (in shares) |
|
17,250,000 |
|
|
| Exercise of stock options |
412 |
412 |
|
|
| Exercise of stock options (in shares) |
163,000 |
163,000 |
|
|
| Exercise of stock options assumed from Minera Andes Inc. acquisition |
361 |
361 |
|
|
| Exercise of stock options assumed from Minera Andes Inc. acquisition (in shares) |
|
70,000 |
|
|
| Shares issued for Mexico mining concessions |
583 |
583 |
|
|
| Shares issued for Mexico mining concessions (in shares) |
|
84,000 |
|
|
| Unrealized (loss) gain on available-for-sale securities, net of taxes |
(1,546) |
|
(1,546) |
|
| Net loss |
(61,872) |
|
|
(61,872) |
| Balance at Dec. 31, 2011 |
219,304 |
613,831 |
(1,289) |
(393,238) |
| Balance (in shares) at Dec. 31, 2011 |
|
139,753,000 |
|
|
| Increase (Decrease) in Shareholders' Equity |
|
|
|
|
| Stock-based compensation |
3,405 |
3,405 |
|
|
| Issuance of exchangeable shares to acquire Minera Andes Inc. |
664,671 |
664,671 |
|
|
| Issuance of exchangeable shares to acquire Minera Andes Inc. (in shares) |
|
127,331,000 |
|
|
| Assumption of stock options in connection with the acquisition of Minera Andes Inc. |
3,175 |
3,175 |
|
|
| Sale of shares for cash, net of issuance costs |
43,047 |
43,047 |
|
|
| Sale of shares for cash, net of issuance costs (in shares) |
|
19,552,000 |
|
|
| Sale of exchangeable shares for cash, net of issuance costs |
17,372 |
17,372 |
|
|
| Sale of exchangeable shares for cash, net of issuance costs (in shares) |
|
7,799,000 |
|
|
| Exercise of stock options |
819 |
819 |
|
|
| Exercise of stock options (in shares) |
445,000 |
445,000 |
|
|
| Exercise of stock options assumed from Minera Andes Inc. acquisition |
3,066 |
3,066 |
|
|
| Exercise of stock options assumed from Minera Andes Inc. acquisition (in shares) |
|
1,062,000 |
|
|
| Shares issued for Mexico mining concessions |
391 |
391 |
|
|
| Shares issued for Mexico mining concessions (in shares) |
|
83,000 |
|
|
| Unrealized (loss) gain on available-for-sale securities, net of taxes |
(5) |
|
(5) |
|
| Reclassification of unrealized loss on marketable equity securities disposed of during the period, net of tax |
(993) |
|
(993) |
|
| Other-than-temporary impairment on marketable equity securities |
1,993 |
|
1,993 |
|
| Net loss |
(66,654) |
|
|
(66,654) |
| Balance at Dec. 31, 2012 |
889,591 |
1,349,777 |
(294) |
(459,892) |
| Balance (in shares) at Dec. 31, 2012 |
|
296,025,000 |
|
|
| Increase (Decrease) in Shareholders' Equity |
|
|
|
|
| Stock-based compensation |
1,382 |
1,382 |
|
|
| Exercise of stock options |
95 |
95 |
|
|
| Exercise of stock options (in shares) |
48,000 |
48,000 |
|
|
| Exercise of stock options assumed from Minera Andes Inc. acquisition |
76 |
76 |
|
|
| Exercise of stock options assumed from Minera Andes Inc. acquisition (in shares) |
|
45,000 |
|
|
| Shares issued for litigation settlement |
3,270 |
3,270 |
|
|
| Shares issued for litigation settlement (in shares) |
|
1,000,000 |
|
|
| Shares issued for Mexico mining concessions |
96 |
96 |
|
|
| Shares issued for Mexico mining concessions (in shares) |
41,500 |
41,000 |
|
|
| Unrealized (loss) gain on available-for-sale securities, net of taxes |
(1) |
|
(1) |
|
| Net loss |
(147,742) |
|
|
(147,742) |
| Balance at Dec. 31, 2013 |
$ 746,767 |
$ 1,354,696 |
$ (295) |
$ (607,634) |
| Balance (in shares) at Dec. 31, 2013 |
|
297,159,000 |
|
|