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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Net income $ 6,609,000 $ 13,940,000 $ 24,314,000 $ 16,808,000
Other comprehensive income:        
Adjustment to pension liability 0 0 12,287,000 0
Income tax expense 0 0 4,793,000 0
Other comprehensive income 0 0 7,494,000 0
Comprehensive income $ 6,609,000 $ 13,940,000 $ 31,808,000 $ 16,808,000