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Supplemental Financial Information (Schedule Of Consolidating Statements Of Operations) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | $ 234,960 | $ 224,519 | $ 425,992 | $ 421,320
Cost of sales | 194,837 | 179,813 | 356,005 | 340,437
Gross profit | 40,123 | 44,706 | 69,987 | 80,883
Selling, general, and administrative expense | 25,393 | 28,423 | 54,924 | 59,404
Income from operations | 14,730 | 16,283 | 15,063 | 21,479
Interest expense | 3,691 | 3,690 | 7,331 | 14,850
Other expense (income) | 519 | (9) | 549 | (75)
Income before taxes | 10,520 | 12,602 | 7,183 | 6,704
Provision for income taxes | 4,089 | 4,870 | 2,838 | 2,615
Income from continuing operations | 6,431 | 7,732 | 4,345 | 4,089
Loss before taxes | 0 | 0 | 0 | (7)
Benefit of income taxes | 0 | 0 | 0 | (3)
Loss from discontinued operations | 0 | 0 | 0 | (4)
Equity in earnings from subsidiaries | 0 | 0 | 0 | 0
Net income | 6,431 | 7,732 | 4,345 | 4,085
Gibraltar Industries, Inc. |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | 0 | 0 | 0 | 0
Cost of sales | 0 | 0 | 0 | 0
Gross profit | 0 | 0 | 0 | 0
Selling, general, and administrative expense | 25 | 26 | 61 | 184
Income from operations | (25) | (26) | (61) | (184)
Interest expense | 3,403 | 3,399 | 6,764 | 14,282
Other expense (income) | 0 | 0 | 0 | 0
Income before taxes | (3,428) | (3,425) | (6,825) | (14,466)
Provision for income taxes | (1,187) | (1,224) | (2,364) | (5,421)
Income from continuing operations | (2,241) | (2,201) | (4,461) | (9,045)
Loss before taxes |  |  |  | 0
Benefit of income taxes |  |  |  | 0
Loss from discontinued operations |  |  |  | 0
Equity in earnings from subsidiaries | 9,025 | 10,457 | 9,340 | 13,864
Net income | 6,784 | 8,256 | 4,879 | 4,819
Guarantor Subsidiaries |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | 216,885 | 207,328 | 389,666 | 385,377
Cost of sales | 179,207 | 164,557 | 324,368 | 308,952
Gross profit | 37,678 | 42,771 | 65,298 | 76,425
Selling, general, and administrative expense | 23,511 | 26,559 | 51,274 | 55,440
Income from operations | 14,167 | 16,212 | 14,024 | 20,985
Interest expense | 322 | 324 | 636 | 632
Other expense (income) | 519 | (9) | 549 | (75)
Income before taxes | 13,326 | 15,897 | 12,839 | 20,428
Provision for income taxes | 5,095 | 5,853 | 4,861 | 7,611
Income from continuing operations | 8,231 | 10,044 | 7,978 | 12,817
Loss before taxes |  |  |  | (7)
Benefit of income taxes |  |  |  | (3)
Loss from discontinued operations |  |  |  | (4)
Equity in earnings from subsidiaries | 794 | 413 | 1,362 | 1,051
Net income | 9,025 | 10,457 | 9,340 | 13,864
Non-Guarantor Subsidiaries |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | 22,971 | 23,288 | 45,890 | 46,505
Cost of sales | 20,173 | 20,829 | 40,667 | 41,313
Gross profit | 2,798 | 2,459 | 5,223 | 5,192
Selling, general, and administrative expense | 1,857 | 1,838 | 3,589 | 3,780
Income from operations | 941 | 621 | 1,634 | 1,412
Interest expense | (34) | (33) | (69) | (64)
Other expense (income) | 0 | 0 | 0 | 0
Income before taxes | 975 | 654 | 1,703 | 1,476
Provision for income taxes | 181 | 241 | 341 | 425
Income from continuing operations | 794 | 413 | 1,362 | 1,051
Loss before taxes |  |  |  | 0
Benefit of income taxes |  |  |  | 0
Loss from discontinued operations |  |  |  | 0
Equity in earnings from subsidiaries | 0 | 0 | 0 | 0
Net income | 794 | 413 | 1,362 | 1,051
Eliminations |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | (4,896) | (6,097) | (9,564) | (10,562)
Cost of sales | (4,543) | (5,573) | (9,030) | (9,828)
Gross profit | (353) | (524) | (534) | (734)
Selling, general, and administrative expense | 0 | 0 | 0 | 0
Income from operations | (353) | (524) | (534) | (734)
Interest expense | 0 | 0 | 0 | 0
Other expense (income) | 0 | 0 | 0 | 0
Income before taxes | (353) | (524) | (534) | (734)
Provision for income taxes | 0 | 0 | 0 | 0
Income from continuing operations | (353) | (524) | (534) | (734)
Loss before taxes |  |  |  | 0
Benefit of income taxes |  |  |  | 0
Loss from discontinued operations |  |  |  | 0
Equity in earnings from subsidiaries | (9,819) | (10,870) | (10,702) | (14,915)
Net income | $ (10,172) | $ (11,394) | $ (11,236) | $ (15,649)

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