XML 66 R51.htm IDEA: XBRL DOCUMENT v3.19.2
Other comprehensive income (loss) and accumulated other comprehensive items - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Other comprehensive income (loss) and accumulated other comprehensive items    
Balance at the beginning of the period $ 512,942 $ 350,727
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Other comprehensive income before reclassifications 1,117 460
Amounts reclassified from other comprehensive items 0 0
Other comprehensive income (loss) 1,117 460
Balance at the end of the period 488,685 488,685
Unrealized Gains/(Losses) On Marketable Securities, net of tax    
Other comprehensive income (loss) and accumulated other comprehensive items    
Balance at the beginning of the period 90 31
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Other comprehensive income before reclassifications 839 898
Amounts reclassified from other comprehensive items 0 0
Other comprehensive income (loss) 839 898
Balance at the end of the period 929 929
Foreign Currency Translation    
Other comprehensive income (loss) and accumulated other comprehensive items    
Balance at the beginning of the period 715 1,431
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Other comprehensive income before reclassifications 278 (438)
Amounts reclassified from other comprehensive items 0 0
Other comprehensive income (loss) 278 (438)
Balance at the end of the period 993 993
AOCI Attributable to Parent    
Other comprehensive income (loss) and accumulated other comprehensive items    
Balance at the beginning of the period 805 1,462
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance at the end of the period $ 1,922 $ 1,922