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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES (Tables)
 3 Months Ended
Mar. 31, 2018
Accounting Policies [Abstract]  
Schedule of Rollforward Goodwill
A rollforward of goodwill for the three months ended March 31, 2018 is as follows (in thousands):
 
 
Three Months Ended
March 31, 2018
 
(unaudited)
 
IHT
 
MS
 
Quest
Integrity
 
Total
Balance at beginning of period
$
194,211

 
$
56,600

 
$
33,993

 
$
284,804

Foreign currency adjustments
(275
)
 
350

 
217

 
292

Balance at end of period
$
193,936

 
$
56,950

 
$
34,210

 
$
285,096
Amounts Used In Basic and Diluted Earnings (Loss) Per Share
Amounts used in basic and diluted loss per share, for the three months ended March 31, 2018 and 2017, are as follows (in thousands):
 
 
Three Months Ended
March 31,
 
2018
 
2017
 
(unaudited)
 
(unaudited)
Weighted-average number of basic shares outstanding
29,974

 
29,804

Stock options, stock units and performance awards
—

 
—

Convertible senior notes
—

 
—

Total shares and dilutive securities
29,974

 
29,804
Effect of ASC 606 on Financial Statements
The effect of ASC 606 on our condensed consolidated balance sheet as of March 31, 2018 and our condensed consolidated statement of operations for the three months ended March 31, 2018 were as follows (in thousands):
 
 
March 31, 2018
 
 
Without adoption of ASC 606
 
Adjustments to apply ASC 606
 
As reported
 
 
(unaudited)
 
(unaudited)
 
(unaudited)
Effect on condensed consolidated balance sheet
 
 
 
 
 
 
Assets
 
 
 
 
 
 
Prepaid expenses and other current assets
 
$
18,330

 
$
12,699

 
$
31,029

Inventory
 
$
52,119

 
$
(672
)
 
$
51,447

 
 
 
 
 
 
 
Liabilities and Equity
 
 
 
 
 
 
Other accrued liabilities
 
$
94,226

 
$
(1,246
)
 
$
92,980

Income taxes payable
 
$
4,090

 
$
179

 
$
4,269

Deferred income taxes
 
$
37,584

 
$
359

 
$
37,943

Retained earnings
 
$
93,635

 
$
12,735

 
$
106,370

 
 
Three Months Ended March 31, 2018
 
 
Without adoption of ASC 606
 
Adjustments to apply ASC 606
 
As reported
 
 
(unaudited)
 
(unaudited)
 
(unaudited)
Effect on condensed consolidated statement of operations
 
 
 
 
 
 
Revenues
 
$
296,857

 
$
5,528

 
$
302,385

Operating expenses
 
$
225,802

 
$
1,049

 
$
226,851

Provision for income taxes
 
$
444

 
$
179

 
$
623

Net loss
 
$
(22,145
)
 
$
4,300

 
$
(17,845
)