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Supplemental Financial Information (Schedule of Consolidating Statements of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | $ 253,171 | $ 234,960 | $ 453,786 | $ 425,992
Cost of sales | 209,052 | 194,837 | 379,752 | 356,005
Gross profit | 44,119 | 40,123 | 74,034 | 69,987
Selling, general, and administrative expense | 32,918 | 25,393 | 53,863 | 54,924
Income from operations | 11,201 | 14,730 | 20,171 | 15,063
Interest expense | 3,811 | 3,691 | 7,511 | 7,331
Other expense (income) | 1,101 | 519 | (2,458) | 549
Income before taxes | 6,289 | 10,520 | 15,118 | 7,183
Provision for income taxes | 2,202 | 4,089 | 5,494 | 2,838
Income from continuing operations | 4,087 | 6,431 | 9,624 | 4,345
Loss before taxes | 0 | 0 | (44) | 0
Benefit of income taxes | 0 | 0 | (16) | 0
Loss from discontinued operations | 0 | 0 | (28) | 0
Equity in earnings from subsidiaries | 0 | 0 | 0 | 0
Net income | 4,087 | 6,431 | 9,596 | 4,345
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 | 31 | 25 | 71 | 61
Income from operations | (31) | (25) | (71) | (61)
Interest expense | 3,402 | 3,403 | 6,804 | 6,764
Other expense (income) | (19) | 0 | (12) | 0
Income before taxes | (3,414) | (3,428) | (6,863) | (6,825)
Provision for income taxes | (1,197) | (1,187) | (2,407) | (2,364)
Income from continuing operations | (2,217) | (2,241) | (4,456) | (4,461)
Loss before taxes |  |  | 0 |
Benefit of income taxes |  |  | 0 |
Loss from discontinued operations |  |  | 0 |
Equity in earnings from subsidiaries | 6,655 | 9,025 | 14,506 | 9,340
Net income | 4,438 | 6,784 | 10,050 | 4,879
Guarantor Subsidiaries |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | 235,468 | 216,885 | 419,818 | 389,666
Cost of sales | 193,554 | 179,207 | 350,418 | 324,368
Gross profit | 41,914 | 37,678 | 69,400 | 65,298
Selling, general, and administrative expense | 30,322 | 23,511 | 49,684 | 51,274
Income from operations | 11,592 | 14,167 | 19,716 | 14,024
Interest expense | 433 | 322 | 760 | 636
Other expense (income) | 1,058 | 519 | (2,465) | 549
Income before taxes | 10,101 | 13,326 | 21,421 | 12,839
Provision for income taxes | 3,174 | 5,095 | 7,435 | 4,861
Income from continuing operations | 6,927 | 8,231 | 13,986 | 7,978
Loss before taxes |  |  | (44) |
Benefit of income taxes |  |  | (16) |
Loss from discontinued operations |  |  | (28) |
Equity in earnings from subsidiaries | (272) | 794 | 548 | 1,362
Net income | 6,655 | 9,025 | 14,506 | 9,340
Non-Guarantor Subsidiaries |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | 22,419 | 22,971 | 42,167 | 45,890
Cost of sales | 19,863 | 20,173 | 37,079 | 40,667
Gross profit | 2,556 | 2,798 | 5,088 | 5,223
Selling, general, and administrative expense | 2,565 | 1,857 | 4,108 | 3,589
Income from operations | (9) | 941 | 980 | 1,634
Interest expense | (24) | (34) | (53) | (69)
Other expense (income) | 62 | 0 | 19 | 0
Income before taxes | (47) | 975 | 1,014 | 1,703
Provision for income taxes | 225 | 181 | 466 | 341
Income from continuing operations | (272) | 794 | 548 | 1,362
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 | (272) | 794 | 548 | 1,362
Eliminations |  |  |  |
Schedule Of Supplemental Financial Information [Line Items] |  |  |  |
Net Sales | (4,716) | (4,896) | (8,199) | (9,564)
Cost of sales | (4,365) | (4,543) | (7,745) | (9,030)
Gross profit | (351) | (353) | (454) | (534)
Selling, general, and administrative expense | 0 | 0 | 0 | 0
Income from operations | (351) | (353) | (454) | (534)
Interest expense | 0 | 0 | 0 | 0
Other expense (income) | 0 | 0 | 0 | 0
Income before taxes | (351) | (353) | (454) | (534)
Provision for income taxes | 0 | 0 | 0 | 0
Income from continuing operations | (351) | (353) | (454) | (534)
Loss before taxes |  |  | 0 |
Benefit of income taxes |  |  | 0 |
Loss from discontinued operations |  |  | 0 |
Equity in earnings from subsidiaries | (6,383) | (9,819) | (15,054) | (10,702)
Net income | $ (6,734) | $ (10,172) | $ (15,508) | $ (11,236)

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