Redeemable Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020
Noncontrolling Interest [Line Items]
Issue of redeemable noncontrolling interests		$ 48,102
Beijing Tongmei Xtal Technology
Noncontrolling Interest [Line Items]
Issue of redeemable noncontrolling interests	$ 48,100
Redeemable non controlling interests ownership percentage	7.06%