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Major Customers (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | $ 6,895 | $ 5,388 | $ 12,478 | $ 22,437
Percentage of Total Revenue (%) | 22.00% | 10.50% | 22.60% | 23.30%
Shandong Morui Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 3,740 | 5,388 | 6,854 | 12,530
Percentage of Total Revenue (%) | 11.90% | 10.50% | 12.40% | 13.00%
Shouguang City Rongyuan Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 3,155 |  | 5,624 | 9,907
Percentage of Total Revenue (%) | 10.10% |  | 10.20% | 10.30%
Bromine |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 4,161 | 3,507 | 7,912 | 16,523
Bromine | Shandong Morui Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 1,904 | 3,507 | 3,634 | 9,238
Bromine | Shouguang City Rongyuan Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 2,257 |  | 4,278 | 7,285
Crude Salt |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 1,625 | 1,121 | 2,459 | 4,585
Crude Salt | Shandong Morui Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 727 | 1,121 | 1,113 | 1,963
Crude Salt | Shouguang City Rongyuan Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 898 |  | 1,346 | 2,622
Chemical Products |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 1,109 | 760 | 2,107 | 1,329
Chemical Products | Shandong Morui Chemical Company Limited |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | $ 1,109 | $ 760 | $ 2,107 | $ 1,329

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- Definition Amount of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 39 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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