XML 48 R34.htm IDEA: XBRL DOCUMENT
v3.20.4

Note 10 - Segment Information, Significant Customers, Industry Concentration and Geographic Areas Dividends (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | (in thousands) |
|  | Amount |  |  | Percent |  |  | Amount |  |  | Percent |  |  | Amount |  |  | Percent |
United States - domestic shipments |  | $ | 316,542 |  |  |  | 66.1 |  |  | $ | 326,559 |  |  |  | 63.5 |  |  | $ | 302,754 |  |  |  | 56.8 |
Shipments to or from Mexico |  |  | 161,412 |  |  |  | 33.7 |  |  |  | 186,392 |  |  |  | 36.3 |  |  |  | 229,350 |  |  |  | 43.0 |
Shipments to or from Canada |  |  | 1,156 |  |  |  | 0.2 |  |  |  | 1,226 |  |  |  | 0.2 |  |  |  | 1,157 |  |  |  | 0.2 |
Total Operating Revenues |  | $ | 479,110 |  |  |  | 100 | % |  | $ | 514,177 |  |  |  | 100 | % |  | $ | 533,261 |  |  |  | 100 | %

X
- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total revenues from reportable segments to the entity's consolidated revenues. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
Name: | us-gaap_ReconciliationOfRevenueFromSegmentsToConsolidatedTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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