XML 84 R52.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Summary of Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information | The following table sets forth a summary of the unaudited quarterly results of operations for the years ended December 31, 2017 and 2016 (in thousands, except per share data):
| Q1 |  | Q2 |  | Q3 |  | Q4
2017 |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 185,554 |  |  | $ | 149,540 |  |  | $ | 159,919 |  |  | $ | 214,585 |
Costs applicable to sales | 114,490 |  |  | 102,229 |  |  | 101,559 |  |  | 121,982 |
Amortization | 38,693 |  |  | 30,733 |  |  | 32,401 |  |  | 44,722 |
Exploration | 5,252 |  |  | 7,813 |  |  | 9,792 |  |  | 7,454 |
Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Write-downs) | 13,962 |  |  | 11,110 |  |  | 12,374 |  |  | 15,106 |
Income (loss) from continuing operations | 18,299 |  |  | (9,995 | ) |  | (11,728 | ) |  | 14,349 |
Income (loss) from discontinued operations | 364 |  |  | (960 | ) |  | (4,924 | ) |  | (6,724 | )
Net income (loss) | 18,663 |  |  | (10,955 | ) |  | (16,652 | ) |  | 7,625 |
Cash provided by (used in) operating activities | 43,938 |  |  | 24,103 |  |  | 37,308 |  |  | 91,811 |
Capital expenditures | 23,591 |  |  | 37,107 |  |  | 28,982 |  |  | 47,054 |
Basic income (loss) per share: |  |  |  |  |  |  |  |  |  |
Net income (loss) from continuing operations | $ | 0.10 |  |  | $ | (0.05 | ) |  | $ | (0.06 | ) |  | $ | 0.08 |
Net income (loss) from discontinued operations | — |  |  | (0.01 | ) |  | (0.03 | ) |  | (0.04 | )
Basic | $ | 0.10 |  |  | $ | (0.06 | ) |  | $ | (0.09 | ) |  | $ | 0.04 |
Diluted income (loss) per share: |  |  |  |  |  |  |
Net income (loss) from continuing operations | $ | 0.10 |  |  | $ | (0.05 | ) |  | $ | (0.06 | ) |  | $ | 0.08 |
Net income (loss) from discontinued operations | — |  |  | (0.01 | ) |  | (0.03 | ) |  | (0.04 | )
Diluted | $ | 0.10 |  |  | $ | (0.06 | ) |  | $ | (0.09 | ) |  | $ | 0.04 |
| Q1 |  | Q2 |  | Q3 |  | Q4
2016 |  |  |  |  |  |  |  |  |  |  |
Revenues | $ | 127,109 |  |  | $ | 156,822 |  |  | $ | 148,762 |  |  | $ | 139,204 |
Costs applicable to sales | 84,058 |  |  | 81,820 |  |  | 84,594 |  |  | 84,903 |
Amortization | 26,210 |  |  | 35,653 |  |  | 26,040 |  |  | 28,625 |
Exploration | 1,731 |  |  | 2,233 |  |  | 3,706 |  |  | 5,260 |
Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Write-downs) | 16,635 |  |  | 10,688 |  |  | 10,439 |  |  | 10,370 |
Income (loss) from continuing operations | (21,640 | ) |  | 8,280 |  |  | 46,123 |  |  | (10,328 | )
Income (loss) from discontinued operations | 1,244 |  |  | 6,217 |  |  | 23,436 |  |  | 2,020 |
Net income (loss) | (20,396 | ) |  | 14,497 |  |  | 69,559 |  |  | (8,308 | )
Cash provided by (used in) operating activities | 1,085 |  |  | 34,752 |  |  | 39,201 |  |  | 21,423 |
Capital expenditures | 21,651 |  |  | 21,971 |  |  | 22,626 |  |  | 28,134 |
Basic income (loss) per share: |  |  |  |  |  |  |
Net income (loss) from continuing operations | $ | (0.15 | ) |  | $ | 0.05 |  |  | $ | 0.29 |  |  | $ | (0.06 | )
Net income (loss) from discontinued operations | 0.01 |  |  | 0.04 |  |  | 0.14 |  |  | 0.01 |
Basic | $ | (0.14 | ) |  | $ | 0.09 |  |  | $ | 0.43 |  |  | $ | (0.05 | )
Diluted income (loss) per share: |  |  |  |  |  |  |
Net income (loss) from continuing operations | $ | (0.15 | ) |  | $ | 0.05 |  |  | $ | 0.28 |  |  | $ | (0.06 | )
Net income (loss) from discontinued operations | 0.01 |  |  | 0.04 |  |  | 0.14 |  |  | 0.01 |
Diluted | $ | (0.14 | ) |  | $ | 0.09 |  |  | $ | 0.42 |  |  | $ | (0.05 | )

X
- References No definition available. + Details
Name: | us-gaap_QuarterlyFinancialInformationDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
Name: | us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration