CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 69,354	$ 73,411
Accounts receivable - less allowance for doubtful accounts of $1,745 and $1,781 at December 31, 2017 and 2016, respectively	78,808	74,416
Inventories	107,719	98,871
Other current assets	10,218	8,744
Total current assets	266,099	255,442
Property, plant and equipment, net	43,495	48,755
Intangible assets, net	69,366	74,828
Goodwill	20,177	17,951
Deferred income taxes	4,155	3,410
Other assets	27,973	26,354
Total assets	431,265	426,740
Current liabilities:
Accounts payable	47,947	47,235
Accrued expenses	30,508	31,549
Current maturities of long-term debt	2,641	11,395
Other current liabilities	6,204	2,148
Total current liabilities	87,300	92,327
Long-term liabilities:
Long-term debt	120,053	129,850
Liability for uncertain tax positions	27,948	27,458
Minimum pension obligation and unfunded pension liability	19,134	16,900
Deferred income taxes	1,567	1,460
Other long-term liabilities	17,303	311
Total liabilities	273,305	268,306
Commitments and contingencies
Stockholders' equity:
Preferred stock, no par value, 1,000,000 shares authorized; none issued	0	0
Additional paid-in capital	28,575	27,242
Retained earnings	147,807	161,287
Accumulated other comprehensive loss	(19,625)	(31,297)
Total stockholders' equity	157,960	158,434
Total liabilities and stockholders' equity	431,265	426,740
Class A Common Stock [Member]
Stockholders' equity:
Common Stock	217	217
Class B Common Stock [Member]
Stockholders' equity:
Common Stock	$ 986	$ 985