Year Ended December 31,

2019

2018

2017

(in thousands)

Cash Paid For:

Interest

$

43,093

$

38,450

$

31,692

Income taxes

$

—

$

34

$

210

Non-Cash Activity:

Accounts payable for purchase of property, plant and equipment

$

14,504

$

14,585

$

15,636

Assets acquired by finance lease

$

—

$

835

$

—

Right-of-use assets acquired by operating lease

$

25,593

—

Market value of common units issued under deferred compensation plans before tax withholding requirements

$

17,415

$

6,142

$

8,149

Acquisition of businesses:

Fair value of assets assumed

$

629,475

$

—

$

—

Previously held equity-method investments (1)

(307,322)

—

Cash paid, net of cash acquired

(320,232)

—

Fair value of liabilities assumed

$

1,921

$

—

$

—