XML 16 R55.htm IDEA: XBRL DOCUMENT v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Disclosure Income Taxes Additional Information [Abstract]        
Provision for Income Taxes $ 15,387 $ 17,130 $ 22,950 $ 24,865
Effective tax rate (as a percent) 34.00% 44.00% 35.00% 44.00%
Increase (decrease) in deferred tax assets, changes in unrealized gain (loss) on marketable securities     (552) 77
Increase (decrease) in deferred tax assets, changes in foreign currency translation adjustments     (1,453) 1,152
Unrecognized Tax Benefits 623   623  
Unrecognized tax benefits that would affect the effective tax rate 474   474  
Income tax penalties and interest expense 18   35  
Income tax penalties and interest accrued $ 250   $ 250