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Inventories | 6 Months Ended
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Jun. 30, 2012
Inventory [Abstract] |
Inventories | Note 4: Inventories Note 4: Inventories At June 30, 2012 and December 31, 2011, inventory reserves for certain slow-moving inventory items (Climate Control products) were $1,737,000 and $1,767,000, respectively. In addition, because cost exceeded the net realizable value, inventory reserves for certain nitrogen-based inventories provided by our Chemical Business were $16,000 at December 31, 2011 (none at June 30, 2012). Changes in our inventory reserves are as follows:
|  | Six Months Ended June 30, |  |  | Three Months Ended June 30, |
| 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
|  | (In Thousands) |
Balance at beginning of period |  | $ | 1,783 |  |  | $ | 1,793 |  |  | $ | 1,705 |  |  | $ | 1,775 |
Provisions for losses |  |  | 44 |  |  |  | 279 |  |  |  | 39 |  |  |  | 294 |
Write-offs and disposals |  |  | (90 | ) |  |  | (84 | ) |  |  | (7 | ) |  |  | (81 | )
Balance at end of period |  | $ | 1,737 |  |  | $ | 1,988 |  |  | $ | 1,737 |  |  | $ | 1,988 |
The provision for (realization of) losses is included in cost of sales in the accompanying condensed consolidated statements of income.

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- Definition The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a, b, c -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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