Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical)

v3.4.0.3
CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Current assets    
Allowance for doubtful accounts $ 18,411 $ 17,168