Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 770,997	$ 662,525
Marketable securities	352,021	520,144
Accounts receivable, net	582,855	508,532
Inventories	448,526	434,060
Prepaid expenses and other current assets	35,642	14,489
Deferred income taxes	0	35,439
Total current assets	2,190,041	2,175,189
Property, plant and equipment, net	3,230,523	3,004,067
Equity investments	8,929	9,208
Other assets, net
Intangible assets, net	208,376	213,404
Deferred charges and other assets, net	282,695	167,417
Total other assets, net	491,071	380,821
Total assets	5,920,564	5,569,285
Current liabilities
Accounts and notes payable	307,116	235,329
Accrued liabilities	312,985	287,313
Total current liabilities	620,101	522,642
Long-term debt, net	758,453	758,148
Deferred income taxes	664,987	575,603
Other liabilities	139,587	150,961
Total liabilities	2,183,128	2,007,354
Commitments and contingencies (Note 8 and 18)
Stockholders' equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.01 par value, 300,000,000 shares authorized; 134,651,380 and 134,663,244 shares issued at June 30, 2016 and December 31, 2015, respectively	1,347	1,347
Common stock, held in treasury, at cost; 5,867,617 and 4,444,898 shares at June 30, 2016 and December 31, 2015, respectively	(322,802)	(258,312)
Additional paid-in capital	545,797	542,148
Retained earnings	3,296,922	3,109,987
Accumulated other comprehensive loss	(82,101)	(129,292)
Total Westlake Chemical Corporation stockholders' equity	3,439,163	3,265,878
Noncontrolling interests	298,273	296,053
Total equity	3,737,436	3,561,931
Total liabilities and equity	$ 5,920,564	$ 5,569,285