Organization and Summary of Significant Accounting Policies (Narrative) (Details)			12 Months Ended
	Apr. 07, 2014 shares	Mar. 18, 2014	Dec. 31, 2015 USD ($) buyer segment	Dec. 31, 2014 USD ($) buyer	Dec. 31, 2013 USD ($)
Accounting Policies [Abstract]
Number of operating segments | segment			1
Stock-based compensation award requisite service period			4 years
Tax benefit from compensation expense			$ 0	$ 0	$ 0
Dividend yield			0.00%
Restricted cash included in prepaid expenses and other current assets			$ 300,000	400,000
Restricted cash included in other assets, non-current			0	1,000,000
Allowance for doubtful accounts			1,000,000	300,000
Provision for doubtful accounts			900,000	200,000
Allowance for doubtful accounts, write-offs			200,000	600,000	400,000
Class of Stock [Line Items]
Foreign exchange (gain) loss, net			$ (1,400,000)	$ (1,119,000)	$ 728,000
Common Stock
Class of Stock [Line Items]
Reverse stock split, conversion ratio		0.5
Credit Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, number of buyers | buyer			2	2
Credit Concentration Risk | Accounts Receivable | Customer 1
Concentration Risk [Line Items]
Concentration risk, percentage			14.00%	15.00%
Credit Concentration Risk | Accounts Receivable | Customer 2
Concentration Risk [Line Items]
Concentration risk, percentage			10.00%	11.00%
Credit Concentration Risk | Accounts Payable
Concentration Risk [Line Items]
Concentration Risk, Number Of Sellers | buyer			1	1
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Major Customers, Policy [Policy Text Block]			0	0	0
Supplier Concentration Risk | Accounts Payable
Concentration Risk [Line Items]
Concentration risk, percentage			10.00%	14.00%
Common Class A
Class of Stock [Line Items]
Reverse stock split, conversion ratio		0.5
Conversion of stock, shares converted | shares	1