Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows From Operating Activities
Net income (loss)	$ (3,349)	$ (9,889)	$ 1,057
Income (loss) from discontinued operations, net of income taxes	(1,701)	(20,733)	(10,267)
Income (loss) from continuing operations	(1,648)	10,844	11,324
Adjustments to reconcile income (loss) from continuing operations to net cash provided by (used for) operating activities
Depreciation	17,638	19,952	22,049
Amortization	8,485	8,886	9,743
Accelerated depreciation associated with restructuring activities	16	1,993	0
Non-cash stock-based compensation expense	4,257	3,626	3,357
(Gain) loss on disposal of fixed assets	(8)	(3,482)	628
Provision for loss on note receivable	23,008	0	0
Lease guarantee contingency	10,323	0	0
Loss on extinguishment of debt	0	1,888	0
Deferred taxes	(9,450)	(5,663)	555
Interest income received (accrued) on note receivable	(361)	(1,384)	(1,276)
Impairment charges	308	544	1,329
Other	457	256	155
Payments on performance based compensation	(1,249)	(1,010)	(1,794)
Other long-term liabilities	180	723	(592)
Cash flows provided by (used for) working capital
Accounts receivable	4,927	(6,709)	6,427
Inventories	3,151	(1,876)	8,603
Prepaid expenses and other current assets	(353)	2,209	1,047
Accounts payable and accrued expenses	713	18,299	(27,594)
Net cash provided by (used for) operating activities - continuing operations	60,394	49,096	33,961
Net cash provided by (used for) operating activities - discontinued operations	858	(4,633)	(232)
Net cash provided by (used for) operating activities	61,252	44,463	33,729
Cash Flows From Investing Activities
Capital expenditures	(5,123)	(5,814)	(12,489)
Proceeds from sale of property, plant and equipment	2,633	11,058	450
Proceeds (payments) related to sale of business	0	0	(4,034)
Net cash provided by (used for) investing activities - continuing operations	(2,490)	5,244	(16,073)
Net cash provided by (used for) investing activities - discontinued operations	0	(1,107)	(16)
Net cash provided by (used for) investing activities	(2,490)	4,137	(16,089)
Cash Flows From Financing Activities
Net borrowings (repayments) on credit facility	(74,557)	(16,474)	(3,804)
Repayments of senior unsecured notes	0	(23,798)	0
Cash dividends paid	(17,862)	(16,341)	(16,221)
Proceeds from issuance of common stock	2,853	4,527	3,374
Excess tax benefit from stock-based compensation	0	0	64
Proceeds from public offering of common stock, net of equity issuance costs	79,522	0	0
Shares withheld for employee taxes on equity awards	(714)	(620)	(1,166)
Deferred financing costs	0	(1,030)	0
Net cash provided by (used for) financing activities - continuing operations	(10,758)	(53,736)	(17,753)
Net cash provided by (used for) financing activities - discontinued operations	0	0	0
Net cash provided by (used for) financing activities	(10,758)	(53,736)	(17,753)
Foreign exchange rate effect on cash	(289)	(208)	665
Less: Net increase (decrease) in cash classified within discontinued operations	0	(5,484)	493
Net increase in cash and restricted cash	47,715	140	59
Cash and restricted cash at January 1	11,179	11,039	10,980
Cash and restricted cash at December 31	58,894	11,179	11,039
Supplemental Disclosures of Cash Flow Information
Interest	6,236	8,913	8,917
Income taxes	$ 5,539	$ 5,651	$ 8,136