Annual report pursuant to Section 13 and 15(d)

Schedule II - Schedule of Valuation and Qualifying Accounts (Details)

v3.6.0.2
Schedule II - Schedule of Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Allowance for doubtful accounts      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance January 1, $ 6,118 $ 7,815 $ 9,078
Charged to Expenses (Benefit) 55,941 47,187 44,961
Write-offs/ Payments/ Other (53,401) (48,884) (46,224)
Balance December 31, 8,658 6,118 7,815
Deferred tax assets—valuation allowance      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance January 1, 49,095 4,995 7,831
Charged to Expenses (Benefit) (1,019) 44,100 (2,836)
Write-offs/ Payments/ Other (394) 0 0
Balance December 31, 47,682 49,095 4,995
Allowance for obsolescence      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance January 1, 9,949 10,724 14,218
Charged to Expenses (Benefit) 1,148 (34) (335)
Write-offs/ Payments/ Other (1,660) (741) (3,159)
Balance December 31, $ 9,437 $ 9,949 $ 10,724