Long-Term Debt - Summary of long term debt (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term debt	$ 3,366	$ 3,524
Less current portion	(548)	(548)
Long-term debt, Noncurrent	2,818	2,976
Term loan payable to a financial institution; Interest rate option of bank prime or LIBOR plus 1.4% (2.18% as of March 31, 2017); monthly principal payments of $21,833 through 2021 with a balloon payment of $786,000 due December 1, 2021
Debt Instrument [Line Items]
Long-term debt	2,009	2,096
Term loan payable to a financial institution; Interest rate option of bank prime or LIBOR plus 1.4% (2.18% as of March 31, 2017); monthly principal payments of $23,810 through 2021
Debt Instrument [Line Items]
Long-term debt	$ 1,357	$ 1,428