Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 9,698,000	$ 8,493,000
Adjustments to reconcile net income to net cash provided from operating activities:
Depreciation and amortization	2,834,000	2,842,000
Provision for bad debts - accounts receivable	232,000	141,000
Share-based compensation expense	1,285,000	1,338,000
Deferred income tax (benefit) provision	(1,361,000)	130,000
Loss (gain) on disposals of property, plant and equipment	13,000	(91,000)
Accretion of acquisition-related contingent liability	92,000	96,000
Changes in assets and liabilities, net of acquisition of business:
Accounts receivable - trade	(7,335,000)	(7,091,000)
Accounts receivable - other	1,047,000	530,000
Inventories	(4,002,000)	(5,958,000)
Prepaid expenses and other current assets	(316,000)	608,000
Other assets	(1,043,000)	14,000
Accounts payable	5,791,000	2,918,000
Other current liabilities	(890,000)	91,000
Long-term pension liability	(333,000)	68,000
Other long-term liabilities	(100,000)	(65,000)
Net cash provided from operating activities	5,612,000	4,064,000
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	$ (4,118,000)	(4,334,000)
Disposals of property, plant and equipment		128,000
Net cash used in investing activities	$ (4,118,000)	(4,206,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	44,460,000	46,197,000
Repayment of long-term debt	(45,365,000)	(47,322,000)
Payment of cash dividends	(3,128,000)	$ (2,675,000)
Payment of contingent liability	(1,200,000)
Proceeds received on exercise of stock options and SARS	1,501,000	$ 1,461,000
Excess tax benefit from exercise of stock options	726,000	188,000
Net cash used in financing activities	(3,006,000)	(2,151,000)
Net decrease in cash and cash equivalents	(1,512,000)	(2,293,000)
Cash and cash equivalents balance, beginning of year	4,586,000	5,316,000
Cash and cash equivalents balance, end of period	$ 3,074,000	$ 3,023,000