Note 14 - Other Current Liabilities - Accrued Expenses (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Salaries, wages, commissions and vacation pay	$ 5,600,000	$ 5,371,000
Accrued rebates	1,932,000	1,349,000
Defined contribution plan accrual	897,000	610,000
Customer deposits	670,000	84,000
Other accrued expenses	1,617,000	893,000
	$ 10,716,000	$ 8,307,000