Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Tax portion of foreign currency translation adjustment $ 397 $ 645 $ 1,732
Service      
Depreciation, amortization, and accretion, cost of revenue 106,282 82,686 65,705
Product      
Depreciation, amortization, and accretion, cost of revenue 13,512 9,389 6,477
Related parties | Service      
Depreciation, amortization, and accretion, cost of revenue 0 0 0
Related parties | Product      
Depreciation, amortization, and accretion, cost of revenue $ 0 $ 0 $ 0