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 (loss)	$ 16,726	$ 6,770
Income (loss) from discontinued operations, net of income taxes	0	127
Income (loss) from continuing operations	16,726	6,643
Adjustments to reconcile income (loss) from continuing operations to net cash provided by (used for) operating activities
Depreciation	3,553	4,012
Amortization	2,271	2,026
Non-cash stock-based compensation expense	653	958
Gain on disposal of fixed assets	(7)	(43)
Gain on sale of notes receivable	(11,924)	0
Impairment charges	0	916
Other	241	100
Payments on long-term performance based compensation	0	(413)
Other long-term liabilities	(104)	379
Cash flows provided by (used for) working capital
Accounts receivable	(3,524)	1,200
Inventories	(5,209)	1,207
Prepaid expenses and other current assets	(218)	733
Accounts payable and accrued expenses	2,569	(12,417)
Net cash provided by (used for) operating activities - continuing operations	5,027	5,301
Net cash provided by (used for) operating activities - discontinued operations	0	7,297
Net cash provided by (used for) operating activities	5,027	12,598
Cash Flows From Investing Activities
Capital expenditures	(2,490)	(2,933)
Acquisition of business	(691)	0
Proceeds from sale of property, plant and equipment	0	4,486
Proceeds on sale of notes receivable	1,200	0
Net cash provided by (used for) investing activities - continuing operations	(1,981)	1,553
Net cash provided by (used for) investing activities - discontinued operations	0	0
Net cash provided by (used for) investing activities	(1,981)	1,553
Cash Flows From Financing Activities
Cash dividends paid	(4,899)	(4,940)
Proceeds from issuance of common stock	125	146
Shares withheld for employee taxes on equity awards	(362)	(974)
Net cash provided by (used for) financing activities - continuing operations	(5,136)	(5,768)
Net cash provided by (used for) financing activities - discontinued operations	0	0
Net cash provided by (used for) financing activities	(5,136)	(5,768)
Foreign exchange rate effect on cash	(223)	39
Net (decrease) increase in cash	(2,313)	8,422
Cash at January 1	75,527	58,894
Cash at March 31	$ 73,214	$ 67,316