CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
NET SALES	$ 158,575,000	$ 166,918,000	$ 202,561,000
COST OF PRODUCTS SOLD	119,895,000	131,294,000	141,142,000
Gross profit	38,680,000	35,624,000	61,419,000
COSTS AND EXPENSES:
General and administrative expenses	22,115,000	20,998,000	23,766,000
Selling and distribution expenses	16,626,000	18,745,000	18,104,000
Amortization of purchased intangible assets	4,011,000	4,033,000	6,103,000
Restructuring expenses	1,202,000	4,063,000	6,781,000
Goodwill impairment charge	0	11,464,000	0
Total costs and expenses	43,954,000	59,303,000	54,754,000
OPERATING INCOME (LOSS)	(5,274,000)	(23,679,000)	6,665,000
OTHER INCOME (EXPENSE):
Other income (expense), net	633,000	(669,000)	(313,000)
Interest expense	(1,070,000)	(1,745,000)	(551,000)
Interest income	3,000	4,000	38,000
INCOME (LOSS) BEFORE INCOME TAXES AND DISCONTINUED OPERATIONS	(5,708,000)	(26,089,000)	5,839,000
INCOME TAX PROVISION (BENEFIT)	797,000	(2,118,000)	3,913,000
INCOME (LOSS) FROM CONTINUING OPERATIONS	(6,505,000)	(23,971,000)	1,926,000
DISCONTINUED OPERATIONS:
Income (loss) from operations of discontinued operations, net of tax	0	0	(77,000)
Gain on sale of discontinued operations, net of tax	0	0	718,000
Income from discontinued operations	0	0	641,000
NET INCOME (LOSS)	$ (6,505,000)	$ (23,971,000)	$ 2,567,000
INCOME (LOSS) PER SHARE - BASIC:
Continuing operations (in dollars per share)	$ (0.46)	$ (1.72)	$ 0.13
Discontinued operations (in dollars per share)	0.00	0.00	0.05
Net income (in dollars per share)	(0.46)	(1.72)	0.18
INCOME (LOSS) PER SHARE - DILUTED:
Continuing operations (in dollars per share)	(0.46)	(1.72)	0.13
Discontinued operations (in dollars per share)	0.00	0.00	0.05
Net income (in dollars per share)	$ (0.46)	$ (1.72)	$ 0.18
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING:
Basic (in shares)	14,126,108	13,935,097	13,687,485
Diluted (in shares)	14,126,108	13,935,097	13,689,707
DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.08	$ 0.14	$ 0.16