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Quarterly Unaudited Financial Data
12 Months Ended
Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]  
QUARTERLY UNAUDITED FINANCIAL DATA QUARTERLY UNAUDITED FINANCIAL DATA
GIBRALTAR INDUSTRIES, INC.
QUARTERLY UNAUDITED FINANCIAL DATA
(in thousands, except per share data)


 2020 Quarters Ended
 March 31June 30September 30December 31Total
Net sales$215,401 $255,184 $296,792 $265,201 $1,032,578 
Gross profit$49,861 $65,561 $78,495 $62,426 $256,343 
Income from continuing operations$12,777 $30,748 $40,943 $22,722 $107,190 
Interest expense $44 $222 $217 $220 $703 
Net income from continuing operations$9,902 $24,457 $31,334 $17,598 $83,291 
Net income (loss) from discontinued operations$2,157 $2,835 $2,426 $(26,143)$(18,725)
Total net income (loss)$12,059 $27,292 $33,760 $(8,545)$64,566 
Income per share from continuing operations:
Basic$0.30 $0.75 $0.96 $0.54 $2.55 
Diluted$0.30 $0.74 $0.95 $0.53 $2.53 
Income (loss) per share from discontinued operations:
Basic$0.07 $0.09 $0.07 $(0.80)$(0.57)
Diluted$0.07 $0.09 $0.07 $(0.79)$(0.57)

 2019 Quarters Ended
 March 31June 30September 30December 31Total
Net sales$187,160 $224,255 $260,784 $226,034 $898,233 
Gross profit$37,259 $56,468 $68,744 $57,426 $219,897 
Income from continuing operations$7,192 $25,073 $28,314 $20,233 $80,812 
Interest expense (income)$2,000 $249 $79 $(5)$2,323 
Net income from continuing operations$4,131 $18,803 $21,951 $15,043 $59,928 
Net income (loss) from discontinued operations$2,214 $1,110 $2,525 $(686)$5,163 
Total net income$6,345 $19,913 $24,476 $14,357 $65,091 
Income per share from continuing operations:
Basic$0.13 $0.58 $0.68 $0.46 $1.85 
Diluted$0.13 $0.58 $0.67 $0.46 $1.83 
Income (loss) per share from discontinued operations:
Basic$0.07 $0.04 $0.07 $(0.02)$0.16 
Diluted$0.06 $0.03 $0.08 $(0.02)$0.16