Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 256,736	$ 298,894
Receivables, net	312,220	293,541
Inventories (Note 6)	188,461	172,748
Other current assets	23,136	23,553
Total current assets	780,553	788,736
Property, Plant and Equipment:
Cost	1,632,103	1,603,286
Less: Accumulated depreciation	(1,032,955)	(1,004,843)
Property, plant and equipment, net	599,148	598,443
Goodwill, net	22,972	25,118
Other intangible assets, net	16,035	18,538
Long-term investments (Note 3)	27,229	28,270
Other non-current assets	12,848	11,756
Total assets	1,458,785	1,470,861
Current Liabilities:
Current maturities of long-term debt (Note 13)	24,312	22,500
Accounts payable	201,313	204,977
Accrued liabilities	80,088	92,776
Total current liabilities	305,713	320,253
Deferred income taxes	14,060	10,962
Long-term debt, less current maturities (Notes 13)	262,504	268,299
Other non-current liabilities	114,474	130,433
Commitments and Contingencies (Note 7)
Equity:
Common stock, $1 par value; authorized 60,000,000 shares; 26,278,816 issued shares in 2018 and 26,070,787 issued shares in 2017	26,279	26,071
Additional paid-in capital	177,779	170,408
Accumulated other comprehensive loss (Note 10)	(124,290)	(99,563)
Retained earnings	775,031	721,741
Less: Common treasury stock, at cost, 3,756,309 shares in 2018 and 3,561,509 shares in 2017	(93,559)	(78,561)
Total Stepan Company stockholders’ equity	761,240	740,096
Noncontrolling interests (Note 2)	794	818
Total equity	762,034	740,914
Total liabilities and equity	$ 1,458,785	$ 1,470,861