CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 53,911	$ 69,354
Accounts receivable - less allowance for doubtful accounts of $1,638 and $1,745 at December 31, 2018 and 2017, respectively	91,939	78,808
Inventories	120,068	107,719
Unbilled receivables	15,799	0
Other current assets	8,792	10,218
Total current assets	290,509	266,099
Property, plant and equipment, net	43,932	43,495
Intangible assets, net	62,689	69,366
Goodwill	19,817	20,177
Deferred income taxes	496	4,155
Other assets	26,081	27,973
Total assets	443,524	431,265
Current Liabilities:
Accounts payable	56,171	47,947
Accrued expenses	32,290	30,508
Current maturities of long-term debt	2,508	2,641
Other current liabilities	15,061	6,204
Total current liabilities	106,030	87,300
Long-term Liabilities:
Long-term debt	111,705	120,053
Liability for uncertain tax positions	27,553	27,948
Minimum pension obligation and unfunded pension liability	18,683	19,134
Deferred income taxes	1,161	1,567
Other long-term liabilities	1,922	17,303
Total liabilities	267,054	273,305
Commitments and contingencies
Stockholders' equity:
Preferred stock, no par value, 1,000,000 shares authorized; none issued	0	0
Additional paid-in capital	31,387	28,575
Retained earnings	168,695	147,807
Accumulated other comprehensive loss	(24,838)	(19,625)
Total stockholders' equity	176,470	157,960
Total liabilities and stockholders' equity	443,524	431,265
Class A Common Stock [Member]
Stockholders' equity:
Common Stock	217	217
Class B Common Stock [Member]
Stockholders' equity:
Common Stock	$ 1,009	$ 986