Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Net income	$ 9,842	$ 9,720
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,125	2,810
Gain on sale of assets	(9)	(138)
Share-based compensation	1,139	1,125
Deferred income taxes, including change in valuation allowance	101	145
Changes in operating assets and liabilities:
Receivables, net	(11,453)	(5,088)
Inventory	(5,649)	(2,561)
Prepaid expenses	(2,339)	(943)
Income taxes payable (refundable)	3,100	(1,649)
Accounts payable	1,635	(3,976)
Accrued expenses	1,003	(3,140)
Deferred credits	(81)	(83)
Other, net	128	(11)
Net cash provided by (used in) operating activities	542	(3,789)
Cash Flows from Investing Activities
Additions to property, plant, and equipment	(5,645)	(3,741)
Deferred compensation plan investments	0	(1,166)
Acquisition of business	(2,750)	0
Proceeds from sale of property	366	0
Other, net	(160)	0
Net cash used in investing activities	(8,189)	(4,907)
Cash Flows from Financing Activities
Payment of dividends and dividend equivalents	(2,060)	(1,714)
Purchase of treasury stock	(4,395)	(5,467)
Loan fees paid related to borrowings	(1,148)	0
Principal payments on long-term debt	(100)	(95)
Proceeds from credit agreement - revolver	54,700	11,025
Other, net	0	(78)
Net cash provided by financing activities	46,997	3,671
Increase (decrease) in cash and cash equivalents	39,350	(5,025)
Cash and cash equivalents, beginning of period	3,309	5,025
Cash and cash equivalents, end of period	$ 42,659	$ 0