CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and equivalents	$ 828,220	$ 1,028,649
Short-term Investments	228,783
Accounts receivable, net of related allowances of $17,495 and $15,036 as of December 31, 2018, and December 31, 2017, respectively	1,040,220	846,415
Accounts receivable-related parties	3,536	22,422
Inventories	1,859,168	1,519,347
Other current assets	72,730	91,509
Total current assets	4,032,657	3,508,342
Property, plant and equipment, net	2,945,767	2,675,904
Intangible assets, net of accumulated amortization of $294,449 and $269,868 as of December 31, 2018, and December 31, 2017, respectively	270,328	256,909
Goodwill	429,645	386,893
Other assets	25,166	27,684
Total assets	7,703,563	6,855,732
Current liabilities
Accounts payable	536,743	473,765
Accounts payable-related parties	14,011	15,683
Income taxes payable	7,468	3,696
Accrued payroll and benefits	264,542	195,909
Accrued interest	25,526	25,533
Accrued expenses	146,613	125,138
Current maturities of long-term debt	24,234	28,795
Total current liabilities	1,019,137	868,519
Long-term debt	2,352,489	2,353,145
Deferred income taxes	435,838	305,949
Other liabilities	8,870	21,811
Total liabilities	3,816,334	3,549,424
Commitments and contingencies
Redeemable noncontrolling interests	111,240	111,240
Equity
Common stock voting, $.0025 par value; 900,000,000 shares authorized; 265,822,402 and 265,003,133 shares issued; and 225,272,174 and 237,396,839 shares outstanding, as of December 31, 2018, and December 31, 2017, respectively	645	644
Treasury stock, at cost; 40,550,228 and 27,606,294 shares, as of December 31, 2018, and December 31, 2017 respectively	(1,184,243)	(665,297)
Additional paid-in capital	1,160,048	1,141,534
Retained earnings	3,958,320	2,874,693
Accumulated other comprehensive income	301
Total Steel Dynamics, Inc. equity	3,935,071	3,351,574
Noncontrolling interests	(159,082)	(156,506)
Total equity	3,775,989	3,195,068
Total liabilities and equity	$ 7,703,563	$ 6,855,732