Commitments and Contingencies - Equity Incentive Plan (Details) $ / shares in Units, $ in Thousands					12 Months Ended
	Jun. 02, 2016 USD ($) item $ / shares shares	Jan. 29, 2016 USD ($) item $ / shares shares	Nov. 11, 2014 USD ($) installment $ / shares shares	Oct. 03, 2014 employee	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 shares	Apr. 30, 2014 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deduction limit | $					$ 1,000
Number of options granted (in shares)					415,000	60,000
2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	910,750						660,750
Shares available for issuance					245,750
Mr. Rami S. Ramadan | 2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options term		5 years	5 years
Number of options granted (in shares)		75,000	200,000
Number of equal parts in which options will vest		4	4
Number of shares vested immediately upon grant date		18,750	50,000
Number of shares that will vest upon the anniversary of the grant date		18,750	50,000
Number of options that have vested and are exercisable					150,000
Exercise price (per share) | $ / shares			$ 3.20		$ 3.46
Percent increase in grant date stock price		4.00%	4.00%
Fair value of options granted | $		$ 78	$ 234
Fair value of options granted (per option) | $ / shares		$ 1.04	$ 1.17
KMEs | Change of control severance agreements
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of KME's with change of control severance agreements | employee				4
KMEs | 2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options term	5 years
Number of options granted (in shares)	340,000
Number of equal parts in which options will vest | item	4
Percent increase in grant date stock price	4.00%
Fair value of options granted | $	$ 382
Fair value of options granted (per option) | $ / shares	$ 1.12