Related Parties (Details Textual) shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2000 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($)
Related Party Transactions [Abstract]
Stock Issued During Period, Shares, New Issues | shares	300
Stock Issued During Period, Value, New Issues | $	$ 130,700
Number of shares sold by Related Party. | shares		0
Number of board members Related Party can nominate		1
Number Of Related Party Representatives On Board		0
Revenue from Related Parties | $		$ 0	$ 1,313