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Condensed Consolidated Statement of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Statement of Comprehensive Income [Abstract]    
Net income available to common stockholders $ 12,801 $ 23,653
Change in net unrealized gain (loss) on securities available-for-sale 0 678
Foreign currency translation adjustment 918 (1,100)
Comprehensive income $ 13,719 $ 23,231