Note 4 - Inventories

3 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

4.

INVENTORIES

Inventories consist of raw materials, work-in-process and finished goods and are stated at the lower of cost or market using the

first

-in,

first

-out (FIFO) method or through the moving average cost method. At

March 

31,

2018

and

December 

31,

2017,

accrued liabilities included

$1.1

million and

$1.3

million of accrued inventory payable, respectively. At

March 

31,

2018

and

December 

31,

2017,

inventory by category is valued net of reserves and consists of:

(in thousands)	March 31,			December 31,
	2018			2017
Finished goods	$	7,234		$	10,792
Raw materials		2,684			3,287
Work-in-process		2,984			759
Inventory reserves		(996	)		(946	)
Total inventories	$	11,906		$	13,892