SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	$ 20	$ 22
Additions Charged to Costs and Expenses	178	8
Additions Charged to other Accounts	0	0
Deductions	(56)	(10)
Balance at end of year	142	20
Allowance for Obsolete Inventories [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	1,619	2,311
Additions Charged to Costs and Expenses	1,229	1,766
Additions Charged to other Accounts	0	0
Deductions	(839)	(2,458)
Balance at end of year	2,009	1,619
Valuation Allowance for Deferred Tax Assets [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	8,519	9,503
Additions Charged to Costs and Expenses	612	795
Additions Charged to other Accounts	0	0
Deductions	(3,867)	(1,779)
Balance at end of year	5,264	8,519
Reserve for Sales Returns [Member]
Schedule of Valuation and Qualifying Accounts [Roll Forward]
Balance at beginning of year	156	528
Additions Charged to Costs and Expenses	1,371	1,168
Additions Charged to other Accounts	0	0
Deductions	(1,289)	(1,540)
Balance at end of year	$ 238	$ 156