XML 51 R39.htm IDEA: XBRL DOCUMENT v3.8.0.1
Changes in Accumulated Other Comprehensive Income (Loss) By Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Jan. 01, 2018
Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance $ 920,964 $ 855,872    
Ending balance 919,088 879,817    
Accumulated other comprehensive loss, net 26,188     $ 359
Retained earnings 279,942     258,076
Unrealized Gains (Losses)        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (249) (2,681)    
Other comprehensive income (loss) before reclassifications (25,233) (685)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance       (1,458)
Amounts reclassified from accumulated other comprehensive income (loss) to net income 0 0    
Net current-period other comprehensive income (loss) (25,233) (685)    
Ending balance (26,691) (3,366)    
Foreign Currency Items        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance 88 0    
Other comprehensive income (loss) before reclassifications 0 0    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance       0
Amounts reclassified from accumulated other comprehensive income (loss) to net income 0 0    
Net current-period other comprehensive income (loss) 0 0    
Ending balance 0 0    
Total Unrealized Gains (Losses)        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (161) (2,681)    
Other comprehensive income (loss) before reclassifications (25,233) (685)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance       (1,458)
Amounts reclassified from accumulated other comprehensive income (loss) to net income 0 0    
Net current-period other comprehensive income (loss) (25,233) (685)    
Ending balance (26,691) (3,366)    
Unrealized Gains (Losses) on Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (198) (2,211)    
Other comprehensive income (loss) before reclassifications 646 201    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance       (240)
Amounts reclassified from accumulated other comprehensive income (loss) to net income 97 504    
Net current-period other comprehensive income (loss) 743 705    
Ending balance 503 (1,506)    
Total        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Beginning balance (359) (4,892)    
Other comprehensive income (loss) before reclassifications (24,587) (484)    
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance       (1,698)
Amounts reclassified from accumulated other comprehensive income (loss) to net income 97 504    
Net current-period other comprehensive income (loss) (24,490) 20    
Ending balance (26,188) $ (4,872)    
Staff Accounting Bulletin No. 118 | Unrealized Gains (Losses)        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (256)
Staff Accounting Bulletin No. 118 | Foreign Currency Items        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       0
Staff Accounting Bulletin No. 118 | Total Unrealized Gains (Losses)        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (256)
Staff Accounting Bulletin No. 118 | Unrealized Gains (Losses) on Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (42)
Staff Accounting Bulletin No. 118 | Total        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (298)
Accounting Standards Update 2016-01        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       0
Accumulated other comprehensive loss, net     $ 1,300  
Retained earnings     $ 1,300  
Accounting Standards Update 2016-01 | Unrealized Gains (Losses)        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (953)
Accounting Standards Update 2016-01 | Foreign Currency Items        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (88)
Accounting Standards Update 2016-01 | Total Unrealized Gains (Losses)        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       (1,041)
Accounting Standards Update 2016-01 | Unrealized Gains (Losses) on Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption       0
Accounting Standards Update 2016-01 | Total        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Cumulative effect of new accounting principle in period of adoption $ (1,041)     $ (1,041)