Rendering

Component: (Network and Table)
Network
2418408 - Disclosure - Employee Retirement Plans - Schedule of Change in Projected Benefit Obligation (Details)
(http://www.ptgi.com/role/EmployeeRetirementPlansScheduleOfChangeInProjectedBenefitObligationDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001006837 (http://www.sec.gov/CIK)
Compensation and Retirement Disclosure [Abstract]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
Compensation and Retirement Disclosure [Abstract]
 
 
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
 
 
Projected benefit obligation, beginning balance
197,600,000  
219,087,000  
Service cost - benefits earning during the period
15,000  
61,000  
Interest cost on projected benefit obligation
6,659,000  
7,330,000  
Contributions
8,000  
32,000  
Actuarial gain (loss)
30,121,000  
(2,375,000) 
Benefits paid
(5,564,000) 
(7,499,000) 
Foreign currency gain (loss)
(36,240,000) 
(19,036,000) 
Projected benefit obligation, ending balance
192,599,000  
 
197,600,000