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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Statement of Comprehensive Income [Abstract] |  |
Net income | $ 144,710 | $ 128,936
Pension and other post-retirement benefits liability |  |
Amortization of benefits liability | 572 | 334
Income tax provision on pension and other post-retirement benefits liability | (171) | (128)
Foreign currency translation | 19,126 | 22,805
Income tax provision on foreign currency translation | (1,782) | 0
Net unrealized holding gains (losses) on investments |  |
Unrealized holding gains on investments | 0 | 24,428
Reclassification of net realized gains to net income | 0 | (52)
Income tax provision on available-for-sale investments | 0 | (8,758)
Other | (75) | 0
Other comprehensive income, net of income taxes | 17,670 | 38,629
Comprehensive income | 162,380 | 167,565
Comprehensive income attributable to noncontrolling interests, net of tax of $813 and $0 for March 31, 2017 and 2016, respectively. | 6,520 | 5,808
Comprehensive income attributable to Westlake Chemical Corporation | $ 155,860 | $ 161,757

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