SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	$ 213	$ 142
Additions Charged to Costs and Expenses	369	579
Additions Charged to other Accounts	0	0
Deductions	(321)	(508)
Balance at end of year	261	213
Allowance for Obsolete Inventories [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	2,142	2,009
Additions Charged to Costs and Expenses	480	2,124
Additions Charged to other Accounts	0	0
Deductions	(1,357)	(1,991)
Balance at end of year	1,265	2,142
Valuation Allowance for Deferred Tax Assets [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	9,745	5,264
Additions Charged to Costs and Expenses	180	5,344
Additions Charged to other Accounts	0	0
Deductions	(897)	(863)
Balance at end of year	9,028	9,745
Reserve for Sales Returns [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	207	238
Additions Charged to Costs and Expenses	1,446	1,628
Additions Charged to other Accounts	0	0
Deductions	(1,506)	(1,659)
Balance at end of year	$ 147	$ 207