Shareholders' Equity And Earnings Per Share (Components Of Other Comprehensive Income (Loss)) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Activity Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	$ (63,036)	$ 7,711
Other comprehensive income (loss) during the period, net of tax, before reclassifications	5,966	(9,554)
Amount reclassified from accumulated other comprehensive income (loss), net of tax	317	776
Total other comprehensive income (loss)	6,283	(8,778)
Balance at end of period	(56,753)	(1,067)
Accumulated Unrealized (Losses) Gains on Securities
Activity Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	(53,665)	6,710
Other comprehensive income (loss) during the period, net of tax, before reclassifications	13,722	(4,649)
Amount reclassified from accumulated other comprehensive income (loss), net of tax	20	(151)
Total other comprehensive income (loss)	13,742	(4,800)
Balance at end of period	(39,923)	1,910
Accumulated Unrealized Losses on Derivative Instruments
Activity Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	(2,462)	(5,292)
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(356)	(39)
Amount reclassified from accumulated other comprehensive income (loss), net of tax	297	927
Total other comprehensive income (loss)	(59)	888
Balance at end of period	(2,521)	(4,404)
Accumulated Foreign Currency Translation Adjustment
Activity Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	(6,909)	6,293
Other comprehensive income (loss) during the period, net of tax, before reclassifications	(7,400)	(4,866)
Amount reclassified from accumulated other comprehensive income (loss), net of tax	0	0
Total other comprehensive income (loss)	(7,400)	(4,866)
Balance at end of period	$ (14,309)	$ 1,427