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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income	$ 53,174	$ 43,118
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	10,330	8,412
Amortization of intangibles	9,881	8,597
Net gain on sale of property, plant and equipment	(9,743)	(2,502)
Loss on debt extinguishment	174	764
Deferred income taxes	(81)	45
Stock-based compensation	5,390	5,430
Non-cash interest expense	1,110	1,042
Changes in operating assets and liabilities
Accounts receivable	(46,564)	30,656
Inventories	(56,057)	(60,748)
Prepaid expenses and other	1,756	3,998
Accounts payable and accrued liabilities	72,792	35,285
Other, net	(1,691)	1,147
Net cash provided by operating activities	40,471	75,244
Cash flows from investing activities
Capital expenditures	(11,117)	(10,856)
Proceeds from the sale of property, plant, and equipment	16,426	3,736
Other, net	3,060	1,220
Net cash provided by (used in) investing activities	8,369	(5,900)
Cash flows from financing activities
Proceeds from exercise of stock options	910	5,630
Dividends paid	(9,271)	(7,767)
Borrowings under revolving credit facilities	423	371
Payments under revolving credit facilities	(423)	(371)
Principal payments under capital lease obligations	(143)	(303)
Proceeds from issuance of term loan credit facility	0	189,470
Principal payments under term loan credit facility	(940)	(190,418)
Principal payments under industrial revenue bond	(92)	(311)
Debt issuance costs paid	0	(354)
Convertible senior notes repurchase	(80,200)	(7,331)
Stock repurchase	(21,413)	(42,794)
Net cash used in financing activities	(111,149)	(54,178)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(62,309)	15,166
Cash, cash equivalents and restricted cash at beginning of period	191,521	163,467
Cash, cash equivalents, and restricted cash at end of period	$ 129,212	$ 178,633

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Amount of cash inflow (outflow) from long-term debt supported by a written promise to pay an obligation.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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