Long-Term Debt - Summary of long term debt (Details) - USD ($) $ in Thousands	Sep. 30, 2015		Dec. 31, 2014
Debt Instrument [Line Items]
Long-term debt	$ 4,210		$ 4,620
Less current portion	(548)	[1]	(548)
Long-term debt, Noncurrent	3,662	[1]	4,072
Term loan payable to a financial institution, principal payments through 2020
Debt Instrument [Line Items]
Long-term debt	2,424		2,620
Term loan payable to a financial institution, principal payments through 2021
Debt Instrument [Line Items]
Long-term debt	$ 1,786		$ 2,000

[1] (Unaudited)