Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities
Net income	$ 26,258	$ 31,189
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	9,892	10,345
Stock compensation expense	6,091	4,828
Exit activity recoveries, non-cash	0	(662)
Provision for deferred income taxes	278	0
Other, net	2,437	657
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(41,156)	(22,048)
Inventories	13,464	(14,985)
Other current assets and other assets	(4,983)	(2,840)
Accounts payable	4,012	6,064
Accrued expenses and other non-current liabilities	(9,807)	(16,351)
Net cash provided by (used in) operating activities	6,486	(3,803)
Cash Flows from Investing Activities
Acquisitions, net of cash acquired	(264)	0
Net proceeds from sale of property and equipment	60	2,929
Purchases of property, plant, and equipment	(6,265)	(3,704)
Net cash used in investing activities	(6,469)	(775)
Cash Flows from Financing Activities
Long-term debt payments	(212,000)	(400)
Payment of debt issuance costs	(1,235)	0
Purchase of treasury stock at market prices	(3,149)	(6,016)
Net proceeds from issuance of common stock	208	526
Net cash used in financing activities	(216,176)	(5,890)
Effect of exchange rate changes on cash	1,035	(1,069)
Net decrease in cash and cash equivalents	(215,124)	(11,537)
Cash and cash equivalents at beginning of year	297,006	222,280
Cash and cash equivalents at end of period	$ 81,882	$ 210,743