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Quarterly Financial Information (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Information Table
 
 
Three Months Ended 2018
 
 
March 31
 
June 30
 
September 30
 
December 31
 
 
(In Thousands, Except Per Share Amounts)
Total revenues
 
$
199,381

 
$
260,072

 
$
256,851

 
$
282,471

Gross profit
 
27,983

 
47,801

 
41,330

 
45,184

Income (loss) before discontinued operations
 
(21,057
)
 
(12,132
)
 
(12,852
)
 
3,316

Net income (loss)
 
(62,763
)
 
(12,153
)
 
(12,056
)
 
2,732

Net income (loss) attributable to TETRA stockholders
 
(53,648
)
 
(5,965
)
 
(6,936
)
 
4,932

Net income (loss) per share before discontinued operations attributable to TETRA stockholders
 
$
(0.10
)
 
$
(0.05
)
 
$
(0.06
)
 
$
0.04

Net income (loss) per diluted share before discontinued operations attributable to TETRA stockholders
 
$
(0.10
)
 
$
(0.05
)
 
$
(0.06
)
 
$
0.04

Net income (loss) per share attributable to TETRA stockholders
 
$
(0.46
)
 
$
(0.05
)
 
$
(0.06
)
 
$
0.04

Net income (loss) per diluted share attributable to TETRA stockholders
 
$
(0.46
)
 
$
(0.05
)
 
$
(0.06
)
 
$
0.04

 
 
Three Months Ended 2017
 
 
March 31
 
June 30
 
September 30
 
December 31
 
 
(In Thousands, Except Per Share Amounts)
Total revenues
 
$
159,409

 
$
179,931

 
$
183,677

 
$
200,081

Gross profit
 
19,654

 
29,535

 
42,651

 
16,550

Loss before discontinued operations
 
(4,245
)
 
(7,966
)
 
(857
)
 
(31,726
)
Net loss
 
(11,252
)
 
(14,619
)
 
(1,338
)
 
(34,974
)
Net income (loss) attributable to TETRA stockholders
 
(2,463
)
 
(10,991
)
 
3,145

 
(28,739
)
Net income (loss) per share before discontinued operations attributable to TETRA stockholders
 
$
0.04

 
$
(0.04
)
 
$
0.03

 
$
(0.22
)
Net income (loss) per diluted share before discontinued operations attributable to TETRA stockholders
 
$
0.04

 
$
(0.04
)
 
$
0.03

 
$
(0.22
)
Net income (loss) per share attributable to TETRA stockholders
 
$
(0.02
)
 
$
(0.10
)
 
$
0.03

 
$
(0.25
)
Net income (loss) per diluted share attributable to TETRA stockholders
 
$
(0.02
)
 
$
(0.10
)
 
$
0.03

 
$
(0.25
)