Earnings per Share Basis and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator
Net income (loss)	$ (18,046)	$ (17,208)	$ (40,075)	$ (39,943)
Denominator
Weighted average shares (basic)	44,321	43,304	44,283	43,203
Dilutive effect of potential common shares	0	0	0	0
Weighted average shares (diluted)	44,321	43,304	44,283	43,203
Basic Earnings Per Share	$ (0.41)	$ (0.40)	$ (0.90)	$ (0.92)
Diluted earnings per share	$ (0.41)	$ (0.40)	$ (0.90)	$ (0.92)