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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Statement of Comprehensive Income [Abstract]    
Reclassification adjustments to net income (loss) resulting from realized gains or losses on sale of securities $ 0 $ 0
Other comprehensive income, tax $ 0 $ 0