XML 27 R13.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Foreign Operations | 12 Months Ended
--- | ---
Dec. 31, 2016
Segment Reporting [Abstract] |
Foreign Operations | Foreign Operations In conjunction with the Company's acquisition of certain assets of Airshield Corporation on October 16, 2001, the Company established manufacturing operations in Mexico (under the Maquiladora program). The Mexican operation is a captive manufacturing facility of the Company and the functional currency is United States dollars. Essentially all sales of the Mexican operations are made in United States dollars, which totaled $49,708,000, $69,235,000 and $61,313,000 in 2016, 2015 and 2014, respectively. Expenses are incurred in the United States dollar and the Mexican peso. Expenses incurred in pesos include labor, utilities, supplies and materials, and amounted to approximately 22%, 19% and 22% of sales produced at the Matamoros operations in 2016, 2015 and 2014, respectively. The Company's manufacturing operation in Mexico is subject to various political, economic, and other risks and uncertainties including safety and security concerns inherent to Mexico. Among other risks, the Company's Mexican operations are subject to domestic and international customs and tariffs, changing taxation policies, and governmental regulations. All of the Company's product is sold to U.S. based customers in U.S. dollars. The following table provides information related to sales by country, based on the ship to location of customers' production facilities, for the years ended December 31:
| 2016 |  | 2015 |  | 2014
United States | $ | 119,018,000 |  |  | $ | 129,651,000 |  |  | $ | 123,317,000 |
Mexico | 51,389,000 |  |  | 63,586,000 |  |  | 47,772,000 |
Canada | 4,475,000 |  |  | 5,831,000 |  |  | 4,115,000 |
Total | $ | 174,882,000 |  |  | $ | 199,068,000 |  |  | $ | 175,204,000 |
The following table provides information related to the location of property, plant and equipment, net, as of December 31:
| 2016 |  | 2015
United States | $ | 42,547,000 |  |  | $ | 44,191,000 |
Mexico | 28,054,000 |  |  | 29,912,000 |
Total | $ | 70,601,000 |  |  | $ | 74,103,000 |

X
- Definition [Table Text Block] for Foreign Operations [Table] + References No definition available. + Details
Name: | cmt_ForeignOperationsTextBlock
Namespace Prefix: | cmt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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