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Network
2406403 - Disclosure - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail)
(http://www.babcock.com/role/IncomeTaxesReconciliationOfUnrecognizedTaxBenefitsDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001486957 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Income Tax Disclosure [Abstract]
 
 
 
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
 
 
 
Balance at beginning of period
2,222,000  
8,597,000  
4,943,000  
Increases based on tax positions taken in the current year
0  
185,000  
868,000  
Increases based on tax positions taken in the prior years
0  
0  
3,396,000  
Decreases based on tax positions taken in the prior years
0  
(134,000) 
(260,000) 
Decreases due to settlements with tax authorities
(571,000) 
(5,934,000) 
(350,000) 
Decreases due to lapse of applicable statute of limitation
0  
(492,000) 
0  
Balance at end of period
1,651,000  
 
2,222,000  
 
8,597,000