Subsequent Events (Details Narrative) - USD ($) $ in Thousands				1 Months Ended		3 Months Ended
	May 11, 2017	Apr. 14, 2017	Jan. 19, 2017	Feb. 28, 2017	Jan. 31, 2017	Mar. 31, 2017	Mar. 31, 2016
Proceeds from offering			$ 8,900	$ 4,500	$ 8,900
Number of common stock sold			1,399,140
Proceeds from common stock						$ 13,388	$ 1,193
Subsequent Event [Member] | ATM Offering [Member]
Proceeds from offering		$ 30,000
Commission percentage		2.50%
Number of common stock sold	20,413
Proceeds from common stock	$ 37,152
Remaining future sales amount	$ 30,000