Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2018

Stockholders' Equity Note [Abstract]

Reclassification out of Accumulated Other Comprehensive Income

The following table presents changes in the amounts we recognized in cumulative other comprehensive income (loss) by component for the three and nine months ended September 30, 2018:

	Three Months Ended September 30, 2018
	Unrealized Gain		Equity in
	(Loss) on Investment		Unrealized Gain
	Securities, net		(Loss) of Investees			Total
Balance at June 30, 2018	$	—	$	(281	)	$	(281	)
Current period other comprehensive income	—		173			173
Balance at September 30, 2018	$	—	$	(108	)	$	(108	)

	Nine Months Ended September 30, 2018
	Unrealized Gain			Equity in
	(Loss) on Investment			Unrealized Gain
	Securities, net			(Loss) of Investees			Total
Balance at December 31, 2017	$	78,715		$	643		$	79,358
Amounts reclassified from cumulative other comprehensive income to retained earnings	(78,715		)	(841		)	(79,556		)
Current period other comprehensive income	—			90			90
Balance at September 30, 2018	$	—		$	(108	)	$	(108	)